CANGZHOU WILSON PIPELINE CO.,LTD

According to the threaded button type drill pipe joints, there are four types: REG(Regular style connection), IF(Internal-flush style...

API Round Thread There are short round thread casing and the long round thread casing points. There are some advantages about round...

1） The influence of welding current on weld formation Under certain other conditions, with the increase of arc welding current, the weld...

The straight seam high frequency welded steel pipe (ERW welded pipe) has advanced forming technology, reliable quality, good welding...

The molten pool refers to the part of the base metal that is melted into a pool due to the heat of the welding arc. The geometrical...

There are many standards for selecting oil casing manufacturers, which can be pided into short-term standards and long-term standards...

According to the different requirements of the production process of the oil casing pipe, the length measurement system of the oil casing...

There are couplings for casing pipe and couplings for tubing, the function is the same that to connect the pipe each other. On the other...

Annealing process of seamless steel pipe: The seamless steel pipe is heated to a certain temperature, kept for a certain period of time,...

1) Normalizing of seamless steel pipe Process: The steel parts are heated to 40~60°C above the critical temperature, kept for a certain...

The heat treatment process of seamless steel pipe mainly includes the following 5 categories: 1. Quenching + high temperature tempering  ...

1. Cracks Hot cracking, in the process of welding seam cooling, due to the sulfur and phosphorus impurities in the steel or welding...

Causes of scratches on the surface of welded pipes (LSAW/SSAW/ERW Pipe): The welded pipe using roll forming requires the strip to be bent...

Submerged arc welding (SAW) is mainly suitable for welding at the flat welding position. If certain tooling aids are used, welding at...

China removes VAT rebate on steel exports, cuts tax on raw material imports to zero 1. Removes rebate on export of 146 steel products...

Straight seam welded pipes, steel pipes made of hot-rolled or cold-rolled steel plates or steel strip coils welded on welding equipment,...

Straight seam steel pipe is a steel pipe whose weld seam is parallel to the longitudinal direction of the steel pipe. It is generally...

What are the weld requirements for straight seam steel pipes? 1. The height of the weld burr of the electric resistance welded steel pipe...

Straight seam steel pipes can be pided into high-frequency straight seam steel pipes(ERW) and submerged arc welded straight seam steel...

Annealing process for seamless steel pipes: The seamless annealing of the seamless steel pipe is to heat the hypo-eutectoid steel to...