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Carbon Steel Pipe

Welded Steel Pipe — ERW, LSAW, SSAW Pipe Manufacturer

High-quality Welded Carbon Steel Pipe — direct from factory

✓ Direct Factory Price
✓ MOQ from 1 Ton
✓ Lead Time: 7-15 days
✓ ISO 9001 & CE Certified
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Welded Steel Pipe — ERW, LSAW, SSAW Pipe Manufacturer - Product photo 1

Product Overview

We are a leading manufacturer and supplier of Welded Carbon Steel Pipe in China. With advanced production facilities and strict quality control, we supply products worldwide at competitive factory prices.

Specifications & Dimensions

ERW / LSAW / SSAW welded carbon steel pipes for structural, plumbing, fencing, and low-pressure conveyance applications.

Outer Diameter 10.3 mm - 2032 mm (1/4" - 80")
Wall Thickness 0.8 mm - 50 mm
Standard Length 6m / 12m standard; random length; cut to length
Standards ASTM A53 Grade B (welded) | ASTM A500 (structural tubing) | API 5L (welded line pipe) | GB/T 3091 / 13793 | EN 10217 / 10219 | BS 1387 / BS EN 10255 | JIS G3452 / G3466
Product Types ERW Pipe (Electric Resistance Welded) · LSAW Pipe (Longitudinal Submerged Arc Welded) · SSAW Pipe (Spiral Submerged Arc Welded) · Square / Rectangular Tube (SHS / RHS) · Galvanized Steel Pipe · Black Steel Pipe
Available Grades A53 Grade B / Q195 / Q215 / Q235B / Q355B / SS400 / S235JR / S275JR / S355JR / API 5L Grade B

Standard Sizes & Weight Chart

Reference sizes and theoretical weights. Custom sizes available upon request.

Nominal SizeOD (mm)Wall (mm)WeightNote
1/2" (15mm)21.3 mm2.77 mm~1.27 kg/mERW, Sch 40, black / galvanized
3/4" (20mm)26.9 mm2.87 mm~1.7 kg/mERW, Sch 40
1" (25mm)33.4 mm3.38 mm~2.5 kg/mERW, Sch 40
2" (50mm)60.3 mm3.91 mm~5.44 kg/mERW, Sch 40
4" (100mm)114.3 mm6.02 mm~16.1 kg/mERW, Sch 40
6" (150mm)168.3 mm7.11 mm~28.2 kg/mERW / LSAW, Sch 40
100×100mm3.0 mm~9.1 kg/mERW, black / galvanized
100×50mm3.0 mm~6.7 kg/mERW, black / galvanized

Why Choose Rubao-Chinasteel as Your Supplier?

Direct Factory Price

We own our manufacturing facilities, ensuring competitive pricing without middlemen markup.

Rigorous Quality Control

Every batch undergoes 3-stage inspection: raw material, production, and final testing with full test reports.

Fast Global Delivery

Standard orders ship within 7-15 days. Well-established logistics network to major ports worldwide.

Custom Processing

Cutting, bending, welding, polishing, and surface treatment available according to your drawings.

Flexible MOQ

Minimum order from 1 ton for standard products. Trial orders welcome for new customers.

24/7 Service

Dedicated sales engineer assigned to each order. Quick response via email, phone, and WhatsApp.

Frequently Asked Questions

What sizes are available for Welded Carbon Steel Pipe?
We supply Welded Carbon Steel Pipe in 10.3 mm - 2032 mm (1/4" - 80"). Custom sizes are also available. Contact us with your specific requirements.
What is the minimum order quantity?
Our standard MOQ is 1 ton for stock products. Custom sizes may require higher MOQ. We are flexible — contact us to discuss your needs.
What is the lead time?
Standard stock products: 3-7 days. Custom products: 7-15 days. Large quantity orders: 15-30 days. We always confirm lead time before you place an order.
Do you provide Mill Test Certificates?
Yes! Every shipment includes a full Mill Test Certificate (MTC/MTR) showing chemical composition and mechanical properties, certified to EN 10204 3.1 standard.

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Send us your specifications and quantity, and we'll reply within 24 hours with a competitive offer.

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