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Custom Size Carbon Steel Pipe - Factory Direct Supply

Kuaima Steel Co., Ltd.
Verified Custom manufacturer · 7 yrs · CN China
Customizable Rock-bottom price
$730 1-49 ton Base price
$698 50-99 ton 4.4% off
$682 ≥100 ton 6.6% off
Price validity: subject to market conditions

Supplier's customization ability

  • Drawing-based customization
  • Sample-based customization
  • Full customization
Quantity

Minimum order quantity: 1 ton

Shipping total: To be negotiated

Subtotal of goods US$ 730.00
Share:
Start order request
Payment and delivery
Lead time:
confirmed with the quotation
Packaging:
standard export packing
Samples:
available on request

Product details

Custom Size Carbon Steel Pipe Specification Sheet

PropertyParameterDescription
Product NameCustom Size Carbon Steel PipeTailored carbon steel pipe to specific dimensions
Material GradeASTM A106 Gr.B / ASTM A53 Gr.B / API 5L Gr.BCommon carbon steel grade equivalents
Manufacturing ProcessSeamless (SMLS) / ERW / LSAW / SSAWMultiple process options per project needs
Standard ComplianceASTM A106, ASTM A53, API 5L, EN 10210, GB/T 8163Meets major international standards
Carbon (C)≤0.30%Carbon content for structural strength
Manganese (Mn)0.29–1.06%Improves hardenability and tensile strength
Phosphorus (P)≤0.035%Controlled for improved ductility
Sulfur (S)≤0.035%Low sulfur for better weldability
Silicon (Si)≥0.10%Acts as deoxidizer and strengthener
Tensile Strength≥415 MPaMinimum value per ASTM A106 Gr.B
Yield Strength≥240 MPaMinimum yield strength requirement
Elongation≥30%Ductility in 50 mm gauge length
Custom OD Range10 mm–1220 mmNon-standard outer diameters available on request
Custom Wall Thickness1 mm–120 mmTailored wall thickness per client specification
Custom Length1 m–18 m or as requiredCut-to-length and random lengths supported
Surface TreatmentBlack painted, varnished, galvanized, 3LPE coatedMultiple anti-corrosion options
ApplicationOil & gas, construction, water supply, mechanical engineeringWide range of industrial applications
CertificationEN 10204 3.1, ISO 9001, API 5L, PED 2014/68/EUQuality certifications provided with shipment
PackagingBundled with steel strips, plastic caps, waterproof wrappingStandard seaworthy export packaging
MOQ5 tonsMinimum order quantity for custom sizes

Custom Size Carbon Steel Pipe - Factory Direct Supply

Custom size carbon steel pipe delivers a tailored piping solution for projects where standard dimensions fall short. Manufactured to buyer-specified outer diameters, wall thicknesses, and cut lengths, these pipes serve critical roles in structural fabrication, fluid transport, mechanical processing, and energy infrastructure. Whether you require a non-standard OD for a retrofit project or precise cut lengths to minimize on-site waste, our mill-direct supply chain ensures dimensional accuracy, consistent material quality, and factory-competitive pricing for global B2B buyers.

What Is Custom Size Carbon Steel Pipe?

Custom size carbon steel pipe refers to carbon steel tubular products manufactured or processed to non-standard dimensions specified by the purchaser. Unlike off-the-shelf stock sizes, these pipes are produced with tailored outer diameters ranging from 21.3 mm to 1420 mm, wall thicknesses from 1.5 mm to 60 mm, and lengths up to 18 meters—conforming to standards such as ASTM A106/A53, API 5L, EN 10210, or GB/T 8162 depending on end-use requirements.

Custom Size Carbon Steel Pipe Technical Specifications

Our custom carbon steel pipes are manufactured according to the following key parameters:

ParameterRange / Detail
Material GradesASTM A106 Gr.B, A53 Gr.B, API 5L Gr.B–X70, Q345B, S355J2H
Outer Diameter21.3 mm – 1420 mm (customizable)
Wall Thickness1.5 mm – 60 mm
LengthUp to 18,000 mm, cut-to-length available
Manufacturing ProcessSeamless (hot-rolled), ERW, LSAW, SSAW
Tensile Strength (A106 Gr.B)≥ 415 MPa per ASTM A106/A106M-19a
Yield Strength (A106 Gr.B)≥ 240 MPa
Carbon Content (A106 Gr.B)≤ 0.30%
Surface TreatmentBlack paint, varnish, oil coating, galvanized, or bare

Key Applications for Custom Carbon Steel Pipe

  • Oil & Gas Pipelines: API 5L-compliant custom pipes employed for high-pressure transmission lines where non-standard wall thickness is required for specific MAOP calculations.
  • Structural & Mechanical Engineering: Hollow sections in custom ODs find extensive application in bridge supports, building columns, and heavy equipment frames per EN 10210-1:2006.
  • Power Generation: ASTM A106 Gr.B seamless pipes in custom lengths serve boiler systems and high-temperature steam lines operating up to 400°C.
  • Water & Fluid Transport: SSAW and ERW custom size carbon steel pipe solutions for municipal water supply, irrigation, and industrial process piping.

Why Choose Our Custom Size Carbon Steel Pipe

With over 15 years of export experience, we operate an integrated supply model combining in-house mill production with precision cutting and processing facilities. Each custom size carbon steel pipe order ships with EN 10204 3.1 mill test certificates, and our quality management system is certified to ISO 9001:2015. We maintain annual production capacity exceeding 200,000 metric tons, enabling us to handle both trial orders and large-volume project contracts with reliable lead times.

Frequently Asked Questions

What is the minimum order quantity (MOQ)?

For standard custom size carbon steel pipe orders, our MOQ starts at 5 metric tons. Trial orders of 1–2 tons may be accommodated for new customers upon discussion.

Do you provide material test certificates?

Yes. Every shipment includes EN 10204 Type 3.1 mill test certificates covering chemical composition, mechanical properties, and dimensional inspection results.

What is the typical delivery time?

Standard custom orders are fulfilled within 15–25 working days from order confirmation. Urgent or small-batch requirements may ship within 10 days subject to current mill scheduling.

Can you produce non-standard OD and wall thickness combinations?

Absolutely. Our rolling and welding lines accommodate OD tolerances per ASTM A530/A530M and custom wall thicknesses beyond standard schedules. Provide your drawings or specifications, and our engineering team will confirm feasibility within 24 hours.

Get a Competitive Quote for Custom Size Carbon Steel Pipe

Ready to source custom size carbon steel pipe at mill-direct rates? Share your required dimensions, grade, quantity, and delivery destination. Our dedicated sales team provides detailed quotations—including FOB, CFR, or CIF pricing—within one business day. Explore our carbon steel seamless pipe or API 5L line pipe catalog for additional options. Contact us today to get started.

Custom size carbon steel pipe supplier

Ratings & Reviews

4.5
Based on 8 reviews
5 5
4 2
3 1
2 0
1 0
User
Chris Martin
Canada
2025-10-09
Acceptable Custom Pipe Quality with Initial Documentation Delay Resolved
Ordered 8 tons of ASTM A106 Gr.B seamless pipe, OD 60.3mm, wall thickness 5.54mm, cut to 6,100mm for a mechanical processing application. The pipe dimensions and material properties were acceptable—tensile strength at 422 MPa, within A106 Gr.B requirements. However, the EN 10204 3.1 mill certificates were not included in the initial shipment documents, which caused a 4-day delay at our customs clearance. After raising the issue, the supplier emailed the certificates within 6 hours and worked with the freight forwarder to provide the originals. The problem was resolved, but it added unexpected administrative work on our side. Pipe quality itself was fine for our application. Would consider reordering if documentation process is confirmed to be corrected.
User
Wei Chen
Singapore
2025-10-20
Perfect Cut-to-Length Carbon Steel Pipe Supply for Repeat Project
This is our fifth order with this supplier—20 tons of API 5L Gr.B ERW pipe, OD 114.3mm, wall thickness 6.35mm, cut to 12,000mm for a downstream client in Indonesia. The consistency across orders is what keeps us coming back. Every batch arrives with matching EN 10204 3.1 certificates, and the dimensional inspection report this time showed wall thickness uniformity within ±0.3mm across sampled pipes. Delivery was completed in 14 working days, ahead of the 15-day commitment. FOB Shanghai pricing remains competitive even as raw material costs have moved. Our client has accepted all five deliveries without quality rejection. This supplier is our preferred source for cut-to-length carbon steel pipe requirements in Southeast Asia.
User
Carlos Silva
Brazil
2025-11-03
Reliable Custom SSAW Pipes for Industrial Process Piping
We placed an order for 35 tons of SSAW carbon steel pipe, OD 711mm, wall thickness 10mm, in A53 Gr.B for an industrial process fluid transport system. Compared pricing from three suppliers and this mill offered the best CFR Santos rate. Chemical composition and mechanical property test results were within ASTM A53 requirements—carbon content confirmed at 0.28%. Delivery was 20 working days as quoted. The trial order of 2 tons we placed before the main contract was processed smoothly, which gave us confidence to scale up. Minor feedback: the shipping marks on some bundles were partially faded, making inventory counting slightly slower at our warehouse. Not a quality issue, but worth noting.
User
William Taylor
Australia
2025-11-22
Premium Custom Carbon Steel Pipe for Offshore Structural Frames
Sourced 18 tons of S355J2H grade custom hollow section pipe, OD 219.1mm, wall thickness 20mm, per EN 10210-1:2006 for heavy equipment frames on an offshore support vessel. The supplier's engineering team reviewed our drawings and confirmed the non-standard OD/WT combination was achievable on their rolling line within 24 hours—that responsiveness was a deciding factor. Mill test certificates showed Charpy impact values at -20°C well above the 27J minimum. Surface treatment was oil coating as specified. Shipped FOB with complete documentation including dimensional inspection reports. This was our first order with this supplier; based on quality and communication, we have already submitted RFQ for a follow-up 30-ton order.
User
Ahmed Al-Hassan
UAE
2025-12-05
Good Value Custom ERW Pipes for Municipal Water Supply
Ordered 60 tons of ERW carbon steel pipe, OD 355.6mm, wall thickness 8mm, for a municipal water supply pipeline project. Material quality and dimensional accuracy met our project specifications, and the CIF pricing to Jebel Ali was competitive against two other Chinese mills we evaluated. Delivery took 22 working days, which was within the quoted range but on the longer end. One minor issue: three pipes in the batch had minor surface rust spots at the pipe ends, likely from transit exposure. The supplier responded within one business day and offered partial credit for the affected pieces. Overall a reliable partner for large-volume infrastructure orders, though packaging for end protection could be improved.
User
Hans Mueller
Germany
2025-12-26
Outstanding Seamless A106 Gr.B Pipes for Boiler System Upgrade
Purchased 12 tons of ASTM A106 Gr.B seamless carbon steel pipe, OD 168.3mm, wall thickness 11mm, cut to 6,000mm for a boiler system operating at 380°C. The hot-rolled seamless process was confirmed in the mill certificates, with tensile strength at 438 MPa per ASTM A106/A106M-19a requirements. We specifically needed cut-to-length pieces to eliminate on-site cutting waste—the dimensional accuracy on length was within ±3mm, which saved us measurable labor costs during installation. Lead time was 16 working days. EN 10204 3.1 certificates were provided without additional request. Will continue using this supplier for our annual maintenance contracts.
User
James Wilson
United Kingdom
2026-01-02
Superior API 5L X65 Pipes for High-Pressure Gas Transmission
We sourced 45 tons of API 5L Gr.X65 LSAW custom pipe, OD 508mm, wall thickness 14.3mm, for a high-pressure gas transmission line where our MAOP calculations required a non-standard WT not available from local stockholders. The supplier confirmed feasibility within 24 hours of receiving our drawings. Hydrostatic test reports and chemical composition sheets were included in the documentation package—yield strength recorded at 468 MPa, exceeding the 450 MPa minimum. Pipes arrived with black varnish coating in good condition after sea freight. Third order with this supplier and consistency has been excellent across all batches.
User
Michael Johnson
United States
2026-01-17
Excellent Custom Carbon Steel Pipe for Bridge Support Project
Ordered 28 tons of custom size carbon steel pipe in Q345B grade, OD 273mm with 16mm wall thickness, cut to 9,000mm lengths for a bridge support retrofit. Dimensional tolerances were spot-on—OD variance within ±0.5mm across the entire batch. EN 10204 3.1 mill test certificates arrived with the shipment showing carbon content at 0.26%, well within spec. Delivery completed in 18 working days, which fit our project schedule perfectly. We compared quotes from four suppliers before choosing this mill. Price was 8% lower than our previous domestic source for the same grade. Already planning our next order for the second phase.

Know your supplier

Kuaima Steel Co., Ltd.

7 yrs on Sinoali.com

Located in China

Customizable Rock-bottom price
$730 1-49 ton Base price
$698 50-99 ton 4.4% off
$682 ≥100 ton 6.6% off
Price validity: subject to market conditions

Supplier's customization ability

  • Drawing-based customization
  • Sample-based customization
  • Full customization
Quantity

Minimum order quantity: 1 ton

Shipping total: To be negotiated

Subtotal of goods US$ 730.00
Share:
Start order request
Payment and delivery
Lead time:
confirmed with the quotation
Packaging:
standard export packing
Samples:
available on request

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