Shengji gb/astm/ jis/en/iso 42crmo4 4140 precision seamless alloy steel tube

Shengji gb/astm/ jis/en/iso 42crmo4 4140 precision seamless alloy steel tube

Shengji is the leading manufacture of precision cold rolled steel tube. It is widely used as barrel & plunger, motor housing, gas springs, shock absorbers, cylinders, body-building instruments, automotive industry, etc. The precision cold rolled steel tube is recommended for applications where accuracy, roughness and cleanness of the pipe is a priority. The inner and outer walls of the precision cold rolled steel tube have high accuracy and excellent roughness (Ra=0.2 - 0.6).The materials can be altered to meet customers' requirements. Shengji cold rolled precision steel pipe can also withstand high pressure. Both the inner and outer walls have a smooth finish with no oxidation layer on the surface. Our precision cold rolled steel tube features the best technology in both domestic and international markets.

 The precision seamless alloy steel tube can be  used for downhole pump barrel & plunger, sucker rod coupling, ESP housing, motor bearing and housing.

 1.Sucker Rod Pump

 2.Brass Sucker rod pump

To solve downhole sucker rod pump corrosion, Shengji developed brass sucker rod pump using precise rolling after 2 year’s studying. Now, Shengji is the first manufacturer in China and the products have been successfully exported to America, Canada, Russia, Tunisia, Kazakhstan, Iran, Saudi Arabia,etc.

 3.Pump housing for Electric Submersible Pump (ESP)

ESP housing manufactured by shengji has high precision and can be assembled without honing. 

4.Cold Rolled Brass Pipe

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 In 1964, our factory is established;

In 1995, we bought in the first tubing production line;

In 2007, our company is restuctured;

In 2015, we became the supplier for Schlumberger and Haliburton.