Carbon Steel Welded Pipe - High-Strength Industrial Grade

Kuaima Steel Co., Ltd.
Verified Custom manufacturer 7yrs CN CN

Ratings & Reviews

5.0
Very satisfied
Based on 8 reviews for verified purchases
Supplier service
5.0
On-time shipment
5.0
Supplier service
5.0
2025-09-02
Acceptable Quality Carbon Steel Pipe, Packaging Issue Resolved
Ordered 8 tons of ASTM A53 Gr.B ERW pipe, 88.9mm OD x 5.49mm wall, for fire protection sprinkler installations across three commercial sites in Ontario. Material quality was acceptable — chemical and mechanical properties on the 3.1 certificates were within ASTM A53 requirements, and the pipes passed our incoming hydrostatic test checks. However, approximately 15% of the bundle arrived with damaged plastic end caps, exposing the pipe ends to moisture during transit. We found minor surface rust on the exposed ends of around 12 pieces. After raising this with the supplier, they responded within one business day and offered a partial credit for the affected pieces, which was fair. The underlying pipe material was unaffected after cleaning. Delivery was 9 days, which was fast. We would order again but will specify reinforced end protection in the next purchase order.
2025-09-24
Excellent API 5L PSL2 X52 Pipe for Petrochemical Pipeline
This was our fourth procurement from this supplier, covering 60 tons of API 5L PSL2 X52 LSAW welded pipe, 457mm OD x 14.3mm wall, for a refinery interconnecting pipeline in Jurong Island. PSL2 documentation requirements are stringent and the supplier delivered — full traceability records, CVN impact test results at -20°C averaging 68J, and ultrasonic weld inspection reports were all included in the document package before shipment. Carbon equivalent values on the certs were 0.38%, supporting good field weldability for our construction team. Goods arrived 11 days ahead of the scheduled delivery date, which helped us recover schedule on the project. Our QA inspector was on-site for mill inspection and reported no issues with the production run. Consistently the most reliable overseas pipe supplier in our approved vendor list.
2025-10-13
Reliable SSAW Pipe for Industrial Conveyor System, Good Pricing
We purchased 12 tons of SSAW welded pipe, 508mm OD x 9mm wall, Q235B grade, black finish, for conveyor roller support structures at our São Paulo plant. Pipe geometry was consistent and the spiral weld seam showed no visible undercut or porosity on visual inspection. Mechanical properties on the test certificates were within expected range for Q235B. Delivery took 25 days, which was on the longer end of what was quoted, though the supplier proactively updated us with shipping status. Price was approximately 9% below what we had paid a local Brazilian distributor for similar specification last quarter. Dimensional tolerance on OD was ±1.2mm on some pieces, slightly wider than the ±1.0mm we requested — not a problem for this application but worth noting for tighter structural uses.
2025-10-30
Premium ERW Pipe for Offshore Platform Structural Framework
Ordered 22 tons of ASTM A53 Gr.B ERW welded pipe in mixed sizes — 114.3mm, 168.3mm, and 273mm OD, all 8mm wall thickness — for structural bracing on a platform upgrade in the Timor Sea. Galvanized finish was specified and the zinc coating adhesion was verified on arrival. Tensile test results on the 3.1 certs showed 441 MPa for the 273mm pipes, well above the 414 MPa minimum. All lengths were supplied at 6m with bevel end preparation, and the bevel angle was consistent at 30°. Delivery to Fremantle port took 16 days, which allowed us to meet our offshore mobilisation window. Our procurement manager noted this was the smoothest documentation process we have had with an overseas steel supplier. Will be placing a follow-on order for the Phase 2 structural scope shortly.
2025-11-18
Outstanding LSAW Pipe Supply for Water Infrastructure Project
Procured 80 tons of LSAW carbon steel welded pipe, 610mm OD x 12mm wall, Q345B grade with epoxy internal coating and 3LPE external coating, for a municipal water transmission main in Abu Dhabi. This was a technically demanding order — coating thickness requirements were specified at 3.5mm minimum for 3LPE, and inspection on arrival confirmed average 3.8mm. EN 10204 3.1 certificates were comprehensive, covering chemical composition, Charpy impact test results, and hydrostatic pressure test data. Goods cleared customs and arrived at site within 28 days of order confirmation. The technical team responded to our engineer's coating specification queries within a few hours each time. We compared quotes from four suppliers before selecting this one — both on price and technical responsiveness, they stood out.
2025-12-07
Good Value EN 10219 Welded Pipe, Minor Documentation Delay
Placed an order for 18 tons of EN 10219-1 S355J2H welded pipe, 323.9mm OD x 10mm wall, for a mechanical handling system frame. Material quality itself was solid — weld seam appearance was clean, wall thickness measured consistently across the batch, and mechanical properties matched the test certificates. Delivery took 22 days, within the quoted window. Only issue was a 3-day delay in receiving the full documentation package after goods arrived at our warehouse. After following up, the complete 3.1 mill certs and dimensional reports were sent promptly. Would have been 5 stars with faster document turnaround. Price per ton was 6% lower than our previous German supplier for equivalent spec, so overall value is good.
2025-12-22
Superior ASTM A500 Gr.C Structural Pipe for Commercial Build
We sourced 28 tons of ASTM A500 Gr.C welded pipe in 168.3mm OD x 8mm wall for structural columns on a multi-storey commercial development in Birmingham. Chemical analysis on the 3.1 certs showed carbon content at 0.24%, comfortably within spec. Yield strength reported at 362 MPa, exceeding the 345 MPa minimum. Pipes arrived with black oiled finish in good condition, no surface pitting or seam irregularities. Custom cut lengths to 6.2m were accurate to within ±0.8mm. Lead time was 18 days for a non-stock size, which was acceptable. Our structural engineer signed off on the material without any queries. Pricing was competitive versus two other UK-based distributors we compared.
2026-01-07
Excellent API 5L Gr.B Welded Pipe for Gas Transmission Project
Ordered 45 tons of API 5L Gr.B ERW welded pipe, 219.1mm OD x 6.35mm wall thickness, with 3LPE coating for a natural gas distribution line in Louisiana. Mill test certificates (EN 10204 Type 3.1) confirmed yield strength at 278 MPa and tensile at 432 MPa, both well above ASTM minimums. Dimensional checks on-site showed OD tolerance within ±0.5mm across all lengths. Shipment arrived in 14 days, right on schedule. Hydrostatic test records were included without us even requesting them. This is our second order with this supplier and quality has been consistent. Will continue sourcing API 5L line pipe from them for upcoming Phase 2 expansion.

Know your supplier

Kuaima Steel Co., Ltd.

Manufacturer, Trading Company · 7 yrs on Sinoali.com

Located in China

Company overview

Year Established
2010
On-time delivery rate
100.0%
Online revenue
100.0%
Plant Area
>=2000m²
number of employees
80
Response Time
<=4h
Customizable
Same product at rock bottom price
620$ 1-49ton Base price
595$ 50-99ton 4% discount
580$ ≥100ton 6.5% discount
Price validity period: Prices 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$ 620
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Mail
Mail
[email protected]
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Phone
Phone
+86 133 7058 6666
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Whatsapp
Whatsapp
+86 133 7058 6666
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