pipe leader factory

The seamlesssteel pipe factory Hebei Shengtian mainly produce and supply seamless steel pipes,  welded steel pipes, spiral pipes, our group company also can supply you the pipe fittings: carbon steel pipe fittings,butt welded pipe fittings, oil casing pipe etc. we an supply pipe fittings. If you need the butt welded pipe fittings. Please contact us. 河北圣天管件集团，河北圣天管件，弯头推制 管件领导者。

How to find out the good pipe supplier in China.

How to find out the good pipe supplier in China.

     There are so many steel pipe factories in china. For a foreigner how to select their own satisfied factory? The following advice hope is helpful to you.

1.    Certificates. In order to void the drain company. Or the fake company. You need ask them the certificates. And see whether they can give you the business license, Certificate of Organization Code and Tax registration certificate.

2.    Checking. This is very important. You should at least  checking their Business license is passed and stamped annually.

3.    Ask a website. Any company should have at least one website. For example, our company we have more than twenty Chinese and foreign website for advertising. Of course we have main website.

4.    Ask a reference company. If possible ask a client  that had been cooperated with them for reference.

5.    Visit the factory. There is no more better way than checking the factory by yourself and discuss on spot.

6.    Service. The good factory is not only supplying good products and prices but also supply good service.

7.    Whether the quality can be promised in a certain days. We have best quality casing steel pipes.

Hebei Shengtian pipe fitting Group Co.,Ltd mainly can supply you seamless steel pipes, carbon steel elbows, forged flanges, pipe fittings tees, reducers, caps etc. We sincerely hope you can come to visit us, and pursue mutual development. Please tell us in advance so that we can pick you up at the air por

BUTT-WELDED ELBOW

Name: 90° BUTT-WELDED ELBOW
Materil: A234-WPB.A420-WPL6.A234-WP12. A234-WP11.A234-WP5.A403-WP304.A403-WP304L.A403-WP316.A403-WP316L.
Size: 1/2"-48"、DN15-DN1200
Pressure: Sch5-Sch160、XXS
Standards: ISO. ANSI. JIS. DIN. GB/T12459、GB/T13401、ASME B16.9、SH3408 SH3409、HG/T21635、HG/T21631、SY/T05010
Use: Petroleum, chemical, power, gas, metallurgy, shipbuilding, construction, etc

seamless steel pipe production process

　　General speaking seamless steel pipe production process can be divided into cold and hot rolled. Cold-rolled seamless steel pipe production process generally is more complicated than the hot-rolled, tube first to three roller rolling and extrusion to sizing test, if surface did not respond to the crack of tube through cutting machine for cutting, cutting growth is about one meter of blank. API5L pipes we can supply.And then into the annealing process annealing to use acidic liquid pickling, pickling should pay attention to surface a lot of blistering, if there are many foaming are produced to illustrate the quality of the pipe is not up to standard. Appearance of cold rolling seamless steel tube to short in hot rolling of seamless steel pipes, cold rolling seamless steel pipe wall generally thick than the hot-rolled seamless steel tube to small, but it seems than thick walled seamless steel pipe is brighter, the surface is not too much rough, caliber without too many burrs.
we can also supply oil screen pipe,  screen pipe , API5CT casing pipe,

oil casing pipe,slotted pipe etc.

different between PLS1 AND PLS2

API 5L seamless steel pipes, the line pipe have PLS1 and PLS2. PLS is the products standard brief name. It is also the quality grade. So when order the API pipes there should clear the material grade. It is pls1 or pls2. The difference between PLS1 And PLS2 is as the following:

1.     The test method and chemical is different. PLS1 no need do the impact test. But PLS2 except steel grade X80, all the other steel grade need the full size on 0℃ the average figure, Vertical ≥41J  Horizontal ≥27J. X80 pipes full size 0℃ Akv average figure is Vertical ≥101J  Horizontal ≥68J.

2.     The PLS2 line steel pipes need do the water pressure test by piece. While PLS1 no need do the UT. PlS2 need do the UT piece by piece.

3.     PLS1 and PLS2 Chemical compare.

PLS1	C ≤	Mn ≤	P ≤	S ≤	Si ≤	V ≤	Nb ≤	Ti ≤
B	0.28	1.20	0.030	0.030	-	-	-	-
PLS2	C ≤	Mn ≤	P ≤	S ≤	Si ≤	V ≤	Nb ≤	Ti ≤	CEpcm ≤
B	0.24	1.20	0.025	0.015	0.40	c	c	0.04	0.25

More info please check the standard API SPEC_5L-2013

Hebei Shengtian Group is a steel factory, which can produce and supply Good quality seamless steel pipes.

large diameter seamless steel pipes