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Tianjin Yuantai Derun Pipe Manufacturing Group Co., Ltd., established in March 2002, is the biggest manufacturer specializing in  ERW square&rectangular tube/pipe, hollow section structure pipe, galvanized pipe and spiral welding pipe in China. Annual output reaches 5 million tons.Yuantai Derun has 59 production lines of black ERW pipe, 10 production lines of galvanized pipe and 3 production lines of spiral welding pipe. Square pipe from 20*20*1mm to 500*500*40mm, rectangular pipe from 20*30*1.2mm to 400*600*40mm,  welded pipe from 2”—60” can be manufactured. Yuantai Derun can manufacture square rectangular pipes as per the standards of ASTM A500, JIS G3466, EN10219, DIN2240, BS1387, AS1163.

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January 1993

Key team members of Yuantai Derun group began technical job in Tianjin Daqiuzhuang tube factory.

June 2002

Tianjin Yuantai Industry & Trade Co., Ltd. was founded, specialize in square, rectangular hollow steel pipe, hot galvanized welded (hot dip galvanized) square tube, the registered capital is USD 10 million.

May 2004

One of Yuantai subsidiaries Tangshan Lituo Steel Tube Co., Ltd. was established, specialize in square rectangular straight welded hollow steel pipe, registered capital is USD 10 million.

April 2005

Yuantai Steel Square Pipe Co. Ltd. was established, specialize in square welding hollow steel tube and galvanized tube, the registered is USD 2 million.

March 2010

Tianjin Yuantai Runxiang commercial trade company was established, specialize in strip steel trade, galvanized pipe agent, etc., the registered capital is USD 2 million.

March 2010

Tianjin Yuantai Derun pipe manufacturing group Co. Ltd. was formally established, marking that the production of high-frequency welded black, galvanized square pipe, spiral welded pipe, pipe logistics and pipe trade as one of the large-scale joint enterprise Yuantai Derun group was formally established, the group registered capital is USD 20 million.

March 2010

Tianjin Yuantai Derun Investment Co., Ltd. was formally established, specialize in steel pipe industry chain,lower industry mergers and acquisitions and industrial real estate development, the registered capital is USD 2 million.

August 2013

Tianjin Derun Runfeng pipe manufacturing Co. Ltd was established, specialize in hot galvanized (hot galvanizing) processing business, the registered capital is USD 8 million.

March 2015

Tianjin Yuantai Yuanda anti-corrosion insulation pipe Co., Ltd. was established, specialize in spiral welded pipe production and sales, the registered capital is USD 2 million.

August 2015

Tangshan Yuantai Derun Pipe Co., Ltd. was established, specialize in steel strip, steel pipe trade, registered capital is USD 1 million.

March 2016

Tianjin Yuantai Derun International Trade Co., Ltd was established,mainly engaged in international import and export business for Yuantai Group, registered capital is USD 2 million.

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API 5L X65 specification-Seamless Steel Pipe-TIANJIN YUANTAI DERUN PIPE MANUFACTURING GROUP CO., LTD-
Seamless Steel Pipe

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API 5L X65 specification
API 5L X65 specification
API 5L X65 specification
API 5L X65 specification
API 5L X65 specification
Thickness: 0.5mm - 60 mm

Outer Diameter: 10.3mm - 2032 mm
Material: API X42 X52 X60 X65 X70 GrA GrB GrC
Length: 5.8m 6m 12m OR required

Product Details:

Item

API 5L oil tube

Grade

API X42 X52 X60 X65 X70 GrA GrB GrC

Thickness

0.5mm - 60 mm

Outer Diameter

10.3mm - 2032 mm

Length

5.8m 6m 12m or as the customer's requirement

Tolerance

+-5%

Used Area

Petroleum, chemical, power, gas, water, metallurgy, shipbuilding,
construction, etc.

Standards

API 5CT, ASTM, API 5L, ASTM A106, ASTM A53

Surface Treatment

Black painting, black varnish, transparent oil, epoxy coating, etc

Packaging

Standard exporting packing or as client's requirement

The above are the general items, for the special types, we can also meet your needs.



What does API 5L mean? 

API is the abbreviation of American Petroleum Institute, 5 refers to the 5th committee, and L refers to line pipe. So the API 5L standard is the line pipe standard referred to by the Fifth Committee of the American Petroleum Institute.

Its main contents are 1. It stipulates the grade, steel grade, and delivery status of API 5L standard steel pipes; 2. The purchase information materials that buyers need to submit; diameter and cold expansion, heat treatment, etc.; 4 acceptance limits, mainly including the chemical composition of the steel pipe, tensile properties, hydrostatic pressure test, bending test, flattening test, guided bending test, impact test, surface defects, dimensional deviation, etc.; 5. Inspection of steel pipes; 6. Marking, etc.


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