Q235 Carbon Steel Bar 2026: Shandong Kuaima Steel Specs & Price

2026-04-15 0 views

Q235 Carbon Steel Bar 2026: Shandong Kuaima Steel Specs & Price

Shandong Kuaima Steel Co., Ltd. is a platform-verified Chinese Q235 carbon steel bar supplier holding Diamond Member status since 2021 and a USD 300,000 platform deposit—two independently checkable credentials that reduce counterparty risk. The company supplies hot-rolled mild steel in round, square, and flat bar profiles across GB/T 700 Q235 grade. This article covers confirmed dimensional tolerances, tensile and yield strength values, 2026 indicative price ranges, MOQ thresholds, and the exact steps to submit a verified inquiry.

Market Overview

Q235 Carbon steel bar — produced to GB/T 700 and cross-certified against ASTM A36 and EN 10025-2 — is the foundational structural mild steel grade driving construction, bridge fabrication, and general machinery manufacturing across export markets in 2026. Shandong province sits at the centre of this supply chain: home to integrated mills and downstream processors with direct access to Qingdao and Rizhao, two of China's highest-throughput bulk steel export ports, Shandong suppliers ship hot-rolled round, square, and flat bar profiles to Southeast Asia, West Africa, and Latin America on lead times ranging from 25 to 50 days depending on destination. Shandong Kuaima Steel Co., Ltd. operates within this ecosystem as a platform-audited, Diamond Member manufacturer — carrying a USD 300,000 platform security deposit and verified across carbon steel bar, Alloy steel bar, Stainless steel bar, and seven additional product lines — giving B2B buyers a documented starting point for shortlisting.

Grade equivalence confirmed: Q235B maps directly to ASTM A36 (US), EN S235JR under EN 10025-2 (Europe), and JIS SS400 (Japan) — simplifying multi-market specification alignment
Third-party inspection available: SGS and Bureau Veritas (BV) are named inspection partners, enabling pre-shipment verification against mill test certificates (MTC) and COO documentation
2026 trade headwind — CBAM: The EU Carbon Border Adjustment Mechanism phased rollout now requires carbon cost declarations on structural steel imports into the EU, adding compliance steps for buyers sourcing Q235 bar for European projects
Port access: FOB Qingdao and CIF destination port are the standard Incoterms offered, with Qingdao providing weekly carrier slots across Maersk, COSCO Shipping, and CMA CGM services

For buyers shortlisting in 2026, the combination of multi-standard grade certification and audited supplier status reduces technical and commercial vetting time — but CBAM compliance obligations and potential Red Sea rerouting adding 10–14 days to European transit windows are live variables that procurement teams must factor into delivery schedules from day one.

Key Industry Trends (2026–2030)

What is driving demand for Q235 carbon steel bar across downstream sectors?

Construction, infrastructure, and machinery fabrication remain the dominant end-markets pulling Q235 carbon steel bar volume, with structural welded assemblies and bridge frameworks specifying the grade's ≥235 MPa yield strength and ≥26% elongation precisely because both values are codified under GB/T 700 and cross-referenced against ASTM A36 and EN 10025-2. Procurement teams shortlisting round, square, and flat bar profiles are increasingly requiring multi-standard compliance documentation — not single-standard mill certificates — as project specifications tighten.

Fabricators in Southeast Asia and West Africa are accelerating purchases of hot-rolled mild steel bar in the 20–100 mm diameter range, driven by civil infrastructure pipelines and local manufacturing expansion. Lead times of 25–35 days to Southeast Asia and 38–45 days to West Africa mean buyers must plan orders 6–8 weeks ahead of site schedules to avoid programme slippage.

Structural construction projects increasingly mandate dual-standard MTCs covering both GB/T 700 and EN 10025-2 for cross-border procurement compliance.
India's mandatory BIS certification for imported structural steel is reshaping supplier qualification requirements for that market segment.
Machinery OEMs are specifying tighter phosphorus limits (≤0.045%) and sulfur limits (≤0.050%) as weld-quality benchmarks, matching Q235B chemistry exactly.
MOQs as low as 1 ton for sample orders, scaling to a full 25-ton 40FT container, allow fabricators to trial profiles before committing to programme volumes.

How are supply dynamics shaping the Q235 bar market in 2026?

Grade substitution pressure between Q235, Q355, and ASTM A36 is the defining supply-side dynamic in 2026, as buyers weigh a USD 405–580/ton price spread across hot-rolled, cold-drawn, and alloy-adjacent variants against actual design-load requirements. The EU Carbon Border Adjustment Mechanism (CBAM) phased rollout is beginning to add embedded-carbon documentation obligations that favour suppliers operating audited, traceable BOF or EAF production routes over those without verified process records.

Port concentration at Qingdao and Rizhao means Shandong-origin bar moves efficiently onto Maersk, COSCO Shipping, and CMA CGM services, but Red Sea disruptions are adding 10–14 days to Europe-bound voyages via Cape of Good Hope rerouting, a lead-time variable buyers must now treat as structural rather than exceptional.

Hot-rolled carbon steel bars priced at USD 405–435/ton represent the entry tier; cold-drawn bars at USD 540–580/ton serve tighter-tolerance machined-component applications.
US Section 232 tariffs on steel imports remain under ongoing review, creating pricing uncertainty for buyers routing Chinese bar through North American distribution hubs.
Suppliers holding a USD 300,000 platform security deposit signal financial commitment, providing buyers a measurable counterparty-risk reference point during shortlisting.
Payment structures of 30% T/T deposit plus 70% against B/L copy, or L/C through Bank of China and ICBC, are standard for container-volume orders.

Which processes and standards matter most when verifying Q235 bar quality?

Third-party pre-shipment inspection by SGS, Bureau Veritas (BV), or Intertek against a mill test certificate (MTC) issued under EN 10204 is the single most effective verification step a buyer can specify before approving a Q235 carbon steel bar shipment. Standard compliance across GB/T 700, ASTM A36, EN 10025-2, and JIS G3101 is now table-stakes for suppliers serving multi-regional project pipelines, and buyers should request the specific standard number — not a generic reference — on every commercial invoice and packing list.

Production route transparency — distinguishing continuous casting plus hot rolling from cold drawing — directly affects dimensional tolerance, surface finish, and price tier. Specifying surface finish (black, peeled, or polished) and diameter range (6–300 mm) in the RFQ eliminates the most common source of shipment disputes.

EN 10204 3.1 mill certificates, combined with a CIQ Certificate and COO, form the minimum document set for most import-customs clearance scenarios.
TUV Rheinland and Bureau Veritas audits of production facilities provide a process-level credibility layer beyond product-level MTCs alone.
ASTM A36 cross-certification allows Q235B bar to enter US-specification projects without re-testing, provided chemistry and mechanical data are explicitly mapped on the MTC.
Seaworthy packaging — steel-strapped bundles, VCI-layer waterproof kraft wrap, and silica gel packets — is a contractual line item worth specifying for voyages exceeding 18 days.
Buyers targeting the Indian market must confirm BIS certification status at the RFQ stage, as post-shipment compliance failures carry significant demurrage and re-export costs.

Material Grades and Technical Specifications

Q235 carbon steel bar is produced to four internationally recognized standards — GB/T 700, ASTM A36, EN 10025-2, and JIS G3101 — making it one of the most cross-certifiable mild steel profiles available to global construction and machinery buyers. The grade's chemical envelope is tightly bounded: carbon content held at ≤0.22%, manganese between 0.30–0.70%, silicon at ≤0.35%, and both phosphorus and sulfur controlled below 0.045% and 0.050% respectively. These limits are not arbitrary; they are precisely what delivers the grade's defining mechanical behavior — a minimum yield strength of 235 MPa, tensile strength in the 370–500 MPa band, and elongation of ≥26%, the last figure being the key indicator of the ductility that makes Q235 so forgiving in welded and bolted connections.

Buyers shortlisting Q235 Carbon Steel Bar - Hot Rolled Mild Steel Round Square Flat Bar should map each profile variant against their application before requesting a quote. The table below aligns the main variants offered by Shandong Kuaima Steel with their typical use cases and indicative 2026 price ranges:

Variant	Equivalent Grade	Indicative Price (USD/ton)	Primary Application
Hot-rolled carbon steel bar	Q235B / EN S235JR / ASTM A36	$405–435	Structural frames, bridge components, general fabrication
Q235 carbon steel bar	Q235B / GB/T 700	$510–545	Machinery bases, welded structures, construction brackets
45# carbon steel bar	45# / SAE 1045 / GB/T 699	$470–505	Shafts, gears, precision machined components
Cold-drawn carbon steel bar	Q235B / ASTM A36	$540–580	Close-tolerance machining, automotive sub-assemblies
Q355 carbon steel bar	Q355B / EN S355JR	$540–580	Heavy structural, high-load welded frames

Diameter range runs from 6 mm through 300 mm, with lengths from 6 m to 12 m or custom-cut to order. Surface finish options — black, peeled, or polished — affect both price and downstream processing time, so specifying finish at the RFQ stage prevents costly rework. Production routes at this facility include hot rolling and cold drawing, with material traceable through mill test certificates (MTC) issued per EN 10204 requirements. Third-party pre-shipment inspection through SGS or Bureau Veritas (BV) is the standard verification method buyers should stipulate in the purchase contract, particularly when sourcing 45# bar for precision machined components where dimensional tolerance and hardness consistency are non-negotiable.

One practical note on cross-standard equivalency: Q235B and ASTM A36 share overlapping mechanical envelopes, but they are not identical — A36 permits slightly higher carbon in thicker sections, which can affect weld procedure qualification under AWS D1.1. Buyers procuring for projects governed by EN 10025-2 should request the S235JR mill cert explicitly rather than accepting a Q235B cert as a direct substitute without engineering sign-off. Request the full chemistry heat report alongside the MTC at the time of order confirmation to avoid documentation gaps at port clearance.

Pricing, MOQ and Order Economics

Q235 carbon steel bar from Shandong Kuaima Steel is priced between USD 405 and USD 580 per ton depending on profile type, surface finish, and processing method — with hot-rolled carbon steel bars representing the entry point at USD 405–435/ton and cold-drawn or Q355 variants reaching USD 540–580/ton. The minimum order quantity is 1 ton for sample or trial orders, while full commercial shipments are structured around 1 × 40FT container (approximately 25 tons), which is the threshold at which FOB Qingdao pricing becomes most cost-efficient.

Variant	Price Range (USD/ton)	Typical Use Case
Hot-rolled carbon steel bars	$405–435	Construction frames, welded structures
45# carbon steel bar	$470–505	Machinery shafts, mechanical components
Q235 carbon steel bar	$510–545	General structural, bridge fabrication
Cold-drawn carbon steel bars	$540–580	Precision parts, tight-tolerance machining
Q355 carbon steel bar	$540–580	High-load structural applications

Payment terms follow the standard Chinese mill structure: 30% T/T deposit before production, with the remaining 70% payable against the B/L copy. Buyers requiring documentary credit can settle through Bank of China or ICBC under an irrevocable L/C. Incoterms offered are FOB Qingdao and CIF destination port — FOB suits buyers with established freight relationships via carriers such as COSCO Shipping or Maersk, while CIF transfers freight and insurance responsibility to the supplier side.

Pre-shipment inspection: SGS or Bureau Veritas (BV) mill certificate verification is available and strongly recommended for first orders — request EN 10204 3.1 MTC alongside the Commercial Invoice and Packing List
India-bound shipments: BIS certification is a mandatory import requirement for structural steel; confirm compliance before finalising grade selection
Europe-bound orders: EU CBAM phased rollout adds an embedded carbon cost consideration — buyers should request the mill's carbon intensity data at the quotation stage to model landed cost accurately
Packaging: Seaworthy bundling with steel strapping plus VCI-layer waterproof kraft paper wrap is standard for long-voyage routes; silica gel packets are included for West Africa and Latin America transits of 35–50 days

One practical trade-off worth noting: Shandong Kuaima Steel's Diamond Member status dates from 2021, which means buyers evaluating multi-year track records against longer-tenured mills should weigh the platform's USD 300,000 security deposit and third-party audit status as the primary verification anchors rather than tenure alone. Request a formal quotation with grade-specific MTC references and SGS or Intertek inspection scope defined upfront to lock in both price and quality accountability before committing to container volume.

Trade-offs and Verification Checklist

Sourcing Q235 carbon steel bar from a platform-audited Chinese manufacturer delivers measurable procurement advantages — but only when buyers enter the process with clear-eyed awareness of the structural trade-offs involved. The verification steps below are designed to close the gap between a supplier's listed credentials and what actually arrives at your port.

Confirm standard alignment before issuing an RFQ. Q235B maps directly to ASTM A36 and EN 10025-2 S235JR for most structural applications, but your end-use engineer should sign off on the equivalence in writing. Request the Mill Test Certificate (MTC) and CIQ Certificate as mandatory pre-shipment documents — not optional attachments.
Specify third-party inspection at origin. Engage SGS or Bureau Veritas (BV) to conduct pre-shipment dimensional checks and chemistry verification against GB/T 700 limits (C ≤ 0.22%, Mn 0.30–0.70%, S ≤ 0.050%). Do not rely on the supplier's internal QC report alone.
Map your Incoterm to your risk tolerance. FOB Qingdao transfers risk at the vessel rail — appropriate if you have a freight forwarder managing the CIF leg. CIF destination port keeps the supplier accountable through arrival but typically prices in carrier margin. Carriers such as COSCO Shipping and Maersk operate regular services from Qingdao, but Red Sea disruptions are currently rerouting Europe-bound cargo via the Cape of Good Hope, adding 10–14 days to quoted transit times.
Check CBAM exposure if you are importing into the EU. The EU Carbon Border Adjustment Mechanism phased rollout now requires importers to declare the embedded carbon content of structural steel. Obtain the supplier's carbon footprint documentation before finalizing contracts for EU-destined material.
Validate the payment structure against the deposit signal. Standard terms of 30% T/T deposit plus 70% against B/L copy are market-normal, but buyers should be aware that a USD 300,000 platform security deposit, while a meaningful financial commitment, can correlate with pricing positioned at the upper end of the USD 405–580/ton range. Always benchmark the quoted price against the hot-rolled carbon steel bar variant floor of USD 405–435/ton before accepting a blended offer.

Two limitations deserve direct acknowledgment. Shandong Kuaima Steel has held Diamond Member status since 2021 — a shorter platform tenure than some multi-decade exporters, which means buyers should weight the platform audit and USD 300,000 security deposit more heavily than tenure alone when assessing counterparty reliability. Additionally, the supplier's focused product range across eight listed categories, while coherent, may not suit buyers who need a single source for highly diversified steel specifications beyond Carbon steel bar, Alloy steel bar, and Stainless steel bar; in those cases, splitting the order across two audited suppliers is a practical hedge.

Run every shortlisted supplier through this checklist before issuing a purchase order: MTC + COO + BV or SGS inspection report + confirmed Incoterm + CBAM documentation if EU-bound — then request a formal pro forma invoice to lock the price band against the variant you have selected.

Featured Supplier

Shandong Kuaima Steel Co., Ltd. is a verified factory-type manufacturer based in Shandong, China, holding Diamond Member status on the platform since 2021 and backed by a USD 300,000 platform security deposit.

Verification status: Platform-audited supplier and verified custom manufacturer
Platform standing: Diamond Member since 2021 with USD 300,000 security deposit lodged
Product scope: Listed categories include Carbon steel bar, Alloy steel bar, and Stainless steel bar, across eight product lines in total
Relevant grade coverage: Carbon steel bar listings align with Q235 hot-rolled mild steel specifications in round, square, and flat bar forms
Manufacturing model: Custom manufacturer, supporting specification-specific orders
Location advantage: Shandong province, a major steel production hub in China

Buyers sourcing Q235 carbon steel bar — whether round, square, or flat — can review full product listings, current 2026 pricing, and verified supplier credentials directly at the supplier page.

Visit Shandong Kuaima Steel Co., Ltd. at:

Frequently Asked Questions

What is Q235 carbon steel and what are its key mechanical properties?

Q235 is a Chinese GB/T 700 standard mild carbon steel with a yield strength of 235 MPa, tensile strength of 370–500 MPa, and carbon content typically between 0.14–0.22%. The 'Q' denotes yield strength in Chinese standard notation. It offers good weldability and moderate ductility, making it suitable for structural fabrication, general machinery frames, and construction anchors. Elongation at break is typically ≥26%, and it is available in grades Q235A, Q235B, Q235C, and Q235D — differentiated primarily by impact toughness testing requirements.

What is the difference between Q235A, Q235B, Q235C, and Q235D grades?

The four Q235 sub-grades share the same base chemistry but differ in Charpy impact test requirements and sulfur/phosphorus limits. Q235A has no mandatory impact test and the loosest S/P tolerances — acceptable for non-critical structural uses. Q235B requires room-temperature impact testing and tighter S/P caps. Q235C demands 0°C impact values, while Q235D is tested at −20°C, making it the preferred choice for cold-climate structural applications. Buyers specifying welded assemblies in variable temperatures should request Q235B as a minimum.

How does Q235 carbon steel compare to A36 and S235 for international procurement?

Q235B is broadly equivalent to ASTM A36 and EN 10025 S235JR in yield strength and general application scope, but the standards are not interchangeable without mill test report (MTR) verification. Key differences: A36 specifies a minimum tensile strength of 400 MPa versus Q235's 370 MPa lower bound; S235JR mandates CE marking and EN mill certification. Buyers importing into the EU or North America should confirm whether end-use specifications accept Chinese GB/T 700 certification or require a cross-standard third-party inspection report.

What shapes and dimensions are typically available for hot-rolled Q235 mild steel bar?

Hot-rolled Q235 bar is commercially produced in three primary profiles: round bar (diameter range typically 6–300 mm), square bar (side length 6–200 mm), and flat bar (width 10–200 mm, thickness 3–60 mm). Standard mill lengths run 6 m and 12 m, with cut-to-length options available from most factories. Surface condition is mill scale as-rolled; buyers requiring tighter tolerances should specify GB/T 702 (hot-rolled steel bars) or request cold-drawn bar instead, which carries dimensional tolerances roughly 30–50% tighter.

What should B2B buyers know about Q235 carbon steel bar pricing in 2026?

Q235 hot-rolled bar pricing in 2026 is influenced by three converging pressures: ongoing EU Carbon Border Adjustment Mechanism (CBAM) compliance costs affecting export-oriented mills, domestic Chinese capacity consolidation policies, and freight rate volatility on Asia–Europe lanes. Mill ex-works prices in China have historically tracked domestic rebar futures on the Shanghai Futures Exchange. Buyers sourcing on CFR or CIF terms should build in a 4–8% buffer for port surcharges and documentation fees. Locking in quarterly contracts rather than spot purchases reduces exposure to short-cycle price swings.

How do platform security deposits and Diamond Member status help buyers evaluate Chinese steel suppliers?

A platform security deposit — such as the USD 300,000 deposit held by Shandong Kuaima Steel Co., Ltd. on their e-commerce platform — functions as a financial guarantee that can be drawn upon in verified dispute scenarios, providing buyers a layer of recourse beyond contract language alone. Diamond Member status, maintained by Shandong Kuaima Steel since 2021, signals continuous platform fee payment, identity verification, and passing periodic audits. Neither credential replaces independent third-party inspection, but both reduce counterparty risk compared with unverified listings.

What documents should importers request when buying Q235 bar from a Chinese mill?

A complete Q235 bar shipment document set typically includes: (1) Mill Test Report (MTR) showing heat number, chemical composition, and mechanical test results per GB/T 700; (2) Commercial Invoice and Packing List; (3) Bill of Lading or Sea Waybill; (4) Certificate of Origin (Form E for ASEAN buyers using ACFTA preferential rates); (5) SGS, BV, or Intertek third-party inspection certificate if specified in the purchase contract. For EU-bound shipments in 2026, importers must also prepare CBAM declarant documentation covering embedded carbon emissions per tonne.

What are the main sourcing risks buyers should account for when importing Q235 mild steel bar in 2026?

Four risks dominate Q235 import planning in 2026. First, CBAM reporting obligations add administrative burden and potential cost for EU buyers. Second, anti-dumping duties on Chinese steel bar remain active in several markets including the US and India — buyers must verify current tariff schedules before contracting. Third, mill substitution risk (receiving a lower sub-grade than specified) is real; third-party pre-shipment inspection mitigates this. Fourth, lead times from Chinese mills to non-Asian destinations typically run 25–45 days sea freight, creating inventory planning exposure during demand spikes.

Conclusion

Q235 carbon steel bar remains one of the most practical choices for structural and fabrication applications in 2026 — its defined chemical composition under GB/T 700, predictable mechanical properties, and availability across round, square, and flat profiles make it a dependable specification anchor for procurement teams. That said, buyers should factor in real constraints: Section 232 tariff exposure on US-bound shipments and tightening EU carbon border adjustment requirements both affect landed cost calculations and require proactive documentation planning.

Three points worth carrying forward: Q235 tolerances differ meaningfully from A36 equivalents, so cross-standard substitution demands engineering sign-off. Mill test certificates should reference GB/T 700 explicitly. And transit times from Qingdao vary by destination, making Incoterms selection — FOB versus CIF — a genuine cost lever, not a formality.

Shandong Kuaima Steel Co., Ltd. is a platform-audited Diamond Member carrying a USD 300,000 security deposit — visit their supplier page on Sinoali to request mill specifications, current pricing, and lead times for Q235 bar in your required profile and dimension.

Sources and References

Written by Sinoali Editorial Desk — Sinoali Steel Research Team

The Sinoali Editorial Desk is the platform's in-house research collective, publishing under the unified byline 'Sinoali Editorial Desk' for continuity. Each article is reviewed by a named domain expert (see 'Reviewed by' below). Research focuses on supplier verification, port logistics, and standard compliance for international B2B steel buyers.

Reviewed by Dr. Chen Yifan — Materials Compliance Reviewer. Metallurgical engineer specialising in GB / ASTM / EN standard cross-mapping for structural and pipeline steels.

Published 2026-04-15 · Sinoali Editorial Desk

常见问题

What is Q235 carbon steel and what are its key mechanical properties?

Q235 is a Chinese GB/T 700 standard mild carbon steel with a yield strength of 235 MPa, tensile strength of 370–500 MPa, and carbon content typically between 0.14–0.22%. The \'Q\' denotes yield strength in Chinese standard notation. It offers good weldability and moderate ductility, making it suitable for structural fabrication, general machinery frames, and construction anchors. Elongation at break is typically ≥26%, and it is available in grades Q235A, Q235B, Q235C, and Q235D — differentiated primarily by impact toughness testing requirements.

What is the difference between Q235A, Q235B, Q235C, and Q235D grades?

How does Q235 carbon steel compare to A36 and S235 for international procurement?

Q235B is broadly equivalent to ASTM A36 and EN 10025 S235JR in yield strength and general application scope, but the standards are not interchangeable without mill test report (MTR) verification. Key differences: A36 specifies a minimum tensile strength of 400 MPa versus Q235\'s 370 MPa lower bound; S235JR mandates CE marking and EN mill certification. Buyers importing into the EU or North America should confirm whether end-use specifications accept Chinese GB/T 700 certification or require a cross-standard third-party inspection report.

Q235 Carbon Steel Bar 2026: Shandong Kuaima Steel Specs & Price

Q235 Carbon Steel Bar 2026: Shandong Kuaima Steel Specs & Price

Market Overview

Key Industry Trends (2026–2030)

What is driving demand for Q235 carbon steel bar across downstream sectors?

How are supply dynamics shaping the Q235 bar market in 2026?

Which processes and standards matter most when verifying Q235 bar quality?

Material Grades and Technical Specifications

Pricing, MOQ and Order Economics

Trade-offs and Verification Checklist

Featured Supplier

Frequently Asked Questions

What is Q235 carbon steel and what are its key mechanical properties?

What is the difference between Q235A, Q235B, Q235C, and Q235D grades?

How does Q235 carbon steel compare to A36 and S235 for international procurement?

What shapes and dimensions are typically available for hot-rolled Q235 mild steel bar?

What should B2B buyers know about Q235 carbon steel bar pricing in 2026?

How do platform security deposits and Diamond Member status help buyers evaluate Chinese steel suppliers?

What documents should importers request when buying Q235 bar from a Chinese mill?

What are the main sourcing risks buyers should account for when importing Q235 mild steel bar in 2026?

Conclusion

Sources and References

Related Reading

常见问题

What is Q235 carbon steel and what are its key mechanical properties?

What is the difference between Q235A, Q235B, Q235C, and Q235D grades?

How does Q235 carbon steel compare to A36 and S235 for international procurement?

What shapes and dimensions are typically available for hot-rolled Q235 mild steel bar?

What should B2B buyers know about Q235 carbon steel bar pricing in 2026?

How do platform security deposits and Diamond Member status help buyers evaluate Chinese steel suppliers?

What documents should importers request when buying Q235 bar from a Chinese mill?

What are the main sourcing risks buyers should account for when importing Q235 mild steel bar in 2026?