Butt weld pipe fittings allow for changing the direction of flow, reducing pipe sizes and attaching auxiliary equipment.

The alloy steel pipe adopts high quality carbon steel, alloy structural steel and stainless & heat resisting steel as raw material through hot rolling or cold drawn to be made.

Hebei Longsheng Pipeline Equipment Co.,Ltd. covers an area of 80 thousand square meters, with a construction area of 50 thousand square meters, with a registered capital of 120 million thousand yuan. The comp...

(1) Bad or wet electrode. (2) The weldment has moisture, oil or rust. (3) The welding speed is too fast. (4) Current is too strong. (5) Arc length is not suitable.

The biggest difference between national standard pipe fittings and American standard pipe fittings is: caliber. The American standard is the domestic often said A series and the national standard is B series

Non-destructive testing of welded pipe fittings: NDT refers to the implementation of a material or workpiece that does not damage or affect its future use performance

Note: In the pipeline system, generally ASTM A105-A105M-2021 can replace 20#, but 20# cannot completely replace A105, because the strength difference is still large. However, the stress corrosion cracking (SCC...

After 20 years of trials and hardships, Longsheng Company has been adhering to the "integrity and pragmatic, quality first" business policy, and has now become a large-scale pipeline equipment manufa...