日韩内射美女人妻一区二区三区,日本在线视频二区,国产亚洲人成网站在线观看不卡,国产精品18久久久久久不卡

Brand Products —— Steel for Petroleum

The steel for petroleum developed and produced by Jianlong Beiman is used to manufacture casing, tubing, sucker rod, drill pipe, drill collar, centralizer, stabilizer, rings, valve body and so on. Products are widely used in oil drilling and production, oil and gas transportation, cementing equipment and other fields. The main products cover 20#, 37Mn5, 30CrMoA、AISI4145H 、20Cr2Ni4E、4330V, etc.,  the impact energy at 20℃ is ≥80J, and can meet the requirements of individual low temperature impact performance. The products have high extrusion resistance, high corrosion resistance to hydrogen sulfide and sulfur dioxide, stable performance, high dimensional accuracy, good surface quality and strong market competitiveness.

Product specifications

Φ20mm ~Φ600mm