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(1) Since the length of the SAW weld is approximately 4-5 times the length of the ERW weld, the internal welding knob has no process ability to remove it, so the friction of the inner wall of the pipe...

What are the ways to avoid wear on seamless steel tubes? 1. Seamless steel tube packaging should be able to prevent slackness and damage during normal loading, unloading, transportation and storage...

Petroleum casing pipe can be roughly pided into 4 types according to different usage methods: surface casing, intermediate casing, production casing, and drilling casing. Surface casing is mainly use...

1. Tube blank quality ERW steel pipe special steel has high purity. Through de-S, de-P, de-aeration, Ca treatment and other methods, the S and P content can be controlled below 0.005%, the N content c...

The technical performance test of seamless steel tubes can be tested through four aspects: hydraulic test, flattening test, bending test, and flare test, to test the applicable ability of the steel pi...

In order to strengthen the borehole wall and ensure continued safe drilling, seal off the oil, gas and water layers, ensure layered testing during exploration and reasonable oil and gas production dur...

Most of the seamless steel tubes are medium and high carbon alloy steels. After quenching, some supercooled austenite has not been converted into martensite, and remains in the use state as residual a...

The difference between ERW straight seam resistance welded steel pipe and LSAW straight seam submerged arc welded (UOE) steel pipe: 1. The difference between raw materials and production capacity ...

Casing drilling and conventional drill pipe drilling have obvious advantages. It is a technical feature of drilling engineering and it can bring huge economic benefits to casting operators.  Casing...

1. The range of wall thickness of seamless steel tube is relatively wide, small diameter and large wall thickness and large diameter and large wall thickness can be achieved, but in general, the lengt...