What is the difference between seamless steel pipe and welded steel pipe in Shandong and the application of seamless steel pipe is divided into cold drawn and hot bar, but the surface has not undergone any treatment, Seamless steel pipe is divided into several types, with its material and execution standards, material Ordinary tube, alloy tube, the implementation of the standard:
1. Structure used for seamless steel pipe: GB8162-99
2. Sewage pipe for conveying fluids: GB8163-99
3, boiler seamless steel tube: GB3087-1999
4、Boiler high-pressure seamless pipe: GB5310-95 (ST45.8-iii type)
5, high-pressure seamless steel pipe for chemical fertilizer equipment: GB6479-1999
6. Geological drilling seamless steel pipe: YB235-70
7. Petroleum drilling seamless steel pipe: YB528-65
8, seamless steel pipe for oil cracking: GB9948-88
9, oil drill collar special seamless tube: YB691-70
10. Seamless steel tubes for automobile half shaft: GB3088-1999
11. Seamless steel tubes for ships: GB5312-1999
12, cold-drawn cold-rolled precision seamless steel pipe: GB3639-1999
13、All kinds of alloy pipes 16Mn, 27SiMn, 15CrMo, 35CrMo, 12CrMov, 20G, 40Cr, 12Cr1MoV, 15CrMo
According to different production processes, steel pipes are divided into two types: seamless steel pipes and welded steel pipes.
Seamless steel tubes are seamless steel tubes made of steel ingots, tube blanks or steel rods.
Welded pipes are made of hot-rolled or cold-rolled steel plates and steel strips. They can be longitudinally welded or spiral welded.
The steel pipe knowledge comes from

RTJ Flanges

* Plate FLANGE (Plate Flange, Flat Flange, Plain Flange)

* SLIP ON FLANGE (SORF SOFF FLANGE)

* WELDING NECK FLANGE (WNRF FLANGE)

* BLANK FLANGE (BLIND FLANGE, BLFF FLANGE, BLRF FLANGE)

* THREADED FLANGE (SCREWED FLANGE)

*BACKING RING FLANGE

RTJ Flanges,ASME B16.5 Flanges,RTJ Sealing Flanges,RTJ Blind Flanges

Shandong Zhongnuo Heavy Industry Co.,Ltd. , https://www.zhongnuoflanges.com