Cangzhou Zhongrun Steel Pipe Co., Ltd., founded in 1994, is located in the beautiful coastal city - Changzhou.The main products:seamless steel pipe,ERW line pipe,LSAW,SSAW and Alloy steel pipe,annual sales of 100,000 tons.
In 2012 my company invested Hengchang Steel Pipe Manufacturing Co., Ltd.in Cangzhou City, the company covers an area of 100 acres, a total of eight pipe production line,annual production of about 40,000 tons.
My company to provide you with quality products and dedicated service, welcome to visit our company.
The following is the standard data, we will do our best to follow the customers' requirements and the agreement to perform.
| Production | API 5L PSL2 SSAW steel pipe |
| Process of manufacture | As-rolled,Heat-treated |
| Type of length | Fixed ruler and Double ruler |
| Inspection and Test | Tensile test,Hydrostatic test,CVN impact test,DWT test,Non-destructive inspection and as agreed |
Chemical Composition
| Pipe/Steel grade | C(%)≤ | Si(%)≤ | Mn(%)≤ | P(%)≤ | S(%)≤ | V(%)≤ | Nb(%)≤ | Ti(%)≤ | CEiiw(%)≤ | CEpcm(%)≤ |
| L245/B | 0.24 | 0.45 | 1.4 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | 0.43 | |
| L290/X42 | 0.24 | 0.45 | 1.4 | 0.025 | 0.015 | 0.06 | 0.05 | 0.04 | 0.43 | |
| L320/X46 | 0.24 | 0.45 | 1.4 | 0.025 | 0.015 | 0.07 | 0.05 | 0.04 | 0.43 | |
| L360/X52 | 0.24 | 0.45 | 1.5 | 0.025 | 0.015 | 0.1 | 0.05 | 0.04 | 0.43 | |
| L390/X56 | 0.24 | 0.45 | 1.5 | 0.025 | 0.015 | 0.1 | 0.05 | 0.04 | 0.43 | |
| L415/X60 | 0.24 | 0.45 | 1.7 | 0.025 | 0.015 | 0.1 | 0.05 | 0.04 | 0.25 | |
| L450/X65 | 0.18 | 0.45 | 1.7 | 0.025 | 0.015 | g | g | g | 0.25 | |
| L485/X70 | 0.18 | 0.45 | 1.8 | 0.025 | 0.015 | g | g | g | 0.25 | |
| L555/X80 | 0.18 | 0.45 | 1.9 | 0.025 | 0.015 | g | g | g | 0.25 | |
| L625/X90 | 0.16 | 0.55 | 2.1 | 0.02 | 0.01 | g | g | g | 0.25 | |
| L690/X100 | 0.16 | 0.55 | 2.1 | 0.02 | 0.01 | g | g | g | 0.25 | |
| L830/X120 | 0.1 | 0.55 | 2.1 | 0.02 | 0.01 | g | g | g | 0.25 | |
| a.The CEiiw limits apply if C>0.12% and the CEpcm limits apply if C≤0.12% | ||||||||||
| g.Unless otherwise agreed,Nb+V+Ti≤0.15% | ||||||||||
Tensile Properties
| Pipe/Steel grade | Yield strength(Mpa) | Tensile strength(Mpa) | ||
| minimum | maximum | minimum | maximum | |
| L245/B | 245 | 450 | 415 | 655 |
| L290/X42 | 290 | 495 | 415 | 655 |
| L320/X46 | 320 | 525 | 435 | 655 |
| L360/X52 | 360 | 530 | 460 | 760 |
| L390/X56 | 390 | 545 | 490 | 760 |
| L415/X60 | 415 | 565 | 520 | 760 |
| L450/X65 | 450 | 600 | 535 | 760 |
| L485/X70 | 485 | 635 | 570 | 760 |
| L555/X80 | 555 | 705 | 625 | 825 |
| L625/X90 | 625 | 775 | 695 | 915 |
| L690/X100 | 690 | 840 | 760 | 990 |
| L830/X120 | 830 | 1050 | 915 | 1145 |
SSAW Pipes Manufacturing Process
External corrosion process
