China Suppliers - Rectangular & Square Section Tubes from Leading Factory with Various Specifications

Welcome to our factory located in the North China Economic Development Zone, a prime area with excellent transportation links. Established in 2002 with a total investment of 120 million yuan, we have built a strong workforce of over 500 employees, including 15 senior engineers, We specialize in manufacturing a wide range of seamless pipes, offering outer diameters from 40-108 mm with wall thicknesses of 12-30 mm, and extending up to 210-426 mm with wall thicknesses of 20-50 mm. Our current inventory includes more than 15,000 tons of seamless steel pipes and 8,000 tons of ERW pipes, ensuring we meet the diverse needs of our clients, As a leading supplier in China, we provide various materials for your reference, including 12CrIMoVG, 15CrMoG, 10CrMo910, Cr5Mo, A335P91, T91, and many more. Our commitment to quality and innovation makes us one of the most reliable factories in the seamless pipe industry. Partner with us for high-quality products and exceptional service

Product Description

Product Overview & Capacity

Scale & Expertise

Established in 2002 with a total investment of 120 million yuan, the production facility is located in the North China Economic Development Zone. The team includes 15 senior engineers and over 500 skilled employees, ensuring high-quality manufacturing standards.

Inventory & Stock

Strategic inventory management includes over 15,000 tons of seamless steel pipes and 8,000 tons of ERW pipes as raw material stock, allowing for rapid response to large-scale project requirements.

Available Size Specifications

  • Outer diameter 40-108mm | Wall thickness 12-30mm
  • Outer diameter 108-219mm | Wall thickness 20-40mm
  • Outer diameter 210-426mm | Wall thickness 20-50mm

Material Classifications

Alloy & Reference Materials

12CrIMoVG, 15CrMoG, 10CrMo910, Cr5Mo, A335P91, T91, A335P5, A335P11, 12Cr2MoWVTiB(102), CrMo, 15McuMoNb5(NB36), 40CrMnMo, 36Mn2V, Cr9Mo, 38CrMoA1, 3035CrMnSiA, 1Cr5Mo, 20CrNiMo, 25Cr2MoV, 35Mn2VNb, 37Mn5, 25MnCr, 40MnV, T11, T12, T22, T24, 30CrMo, 35CrMo, 15NiCuMoNiB5(WB36), 42CrMo, 38CrM.

Oil Casing & Geothermal

J55, K55, N80, L80, P110, X40-X70, L245, L360. Applicable for oil casing, geothermal tubing and casing, and pipeline pipe.

Stainless Steel

0Cr18Ni9, 1Cr18Ni9Ti, 304, 304L, 310S, 316(0Cr18Ni12Mo2), 316L(00Cr17Ni14Mo2).

Carbon & Standard Alloy

Carbon: 10#, 20#, 35#, 45#. Alloy: Q345B, Q345D, 16Mn, 30Mn, 27SiMn, 20Cr, 40Cr.

Manufacturing Standards & Customization

Our products strictly comply with international specifications: GB/T8162-2008, GB/T8163-2008, GB3087-2008, GB5310-1995, GB6479-2000, GB9948-88, GB5312-1999, as well as JIS, European, and American standards.

We offer customized thick-wall seamless pipes, cold drawn pipes, hot expansion diameter seamless steel pipes, and alloy high-pressure boiler tubes in specialized materials such as: 12CrIMoVG(G), T12(ASTM), 15CrMoG(GB), 13CrMo44(DIN), Cr5Mo(GB), A335PII(ASTM), 12Cr2Mo(GB), 10CrMo910(DIN).

Frequently Asked Questions

What are the available dimensions for your seamless steel pipes?
We offer a wide range of sizes, including outer diameters from 40mm to 426mm and wall thicknesses from 12mm to 50mm, covering various industrial needs.
Do you provide customized material pipes?
Yes, we specialize in customized special specifications and thick-wall seamless pipes, including special alloys like 15CrMoG and 12CrlMoVG.
Which international standards do your products follow?
Our manufacturing processes comply with GB, JIS, European, and American standards (ASTM/DIN), ensuring global compatibility and quality.
What is your current stock capacity?
We maintain a consistent stock of over 15,000 tons of seamless pipes and 8,000 tons of ERW pipes to ensure timely delivery.
What types of specialized pipes do you offer?
Our lineup includes oil casing, geothermal tubing, high-pressure boiler tubes, cold drawn pipes, and hot expansion diameter pipes.

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