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
Product DescriptionShengji 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.
![rig,mud pump,rotary table,drilling swivel,travelling block hook](http://sc01.alicdn.com/kf/HTB1I7MEIpuWBuNjSszb763S7FXaA/200608702/HTB1I7MEIpuWBuNjSszb763S7FXaA.png)
![rig,mud pump,rotary table,drilling swivel,travelling block hook Shengji gb/astm/ jis/en/iso 42crmo4 4140 precision seamless alloy steel tube](http://sc01.alicdn.com/kf/HTB1I7MEIpuWBuNjSszb763S7FXaA/200608702/HTB1I7MEIpuWBuNjSszb763S7FXaA.png)
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Production Process
Oilfield Application
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
Barrel specification | Nominal Dia.(in) | I.D. Tolerance(mm) | Wall thickness | Material | Plunger specification | O.D. tolerance(mm) | Length (in) |
Φ32 | 1 1/4” | ±0.05 | 3/50” 1/8” 1/4” 3/8” 3/4” 7/8” 1” | 1.Carbon steel 1020,1026,1045 etc); 2.Brass 3.Alloy steel 304,316,316L,S50100, 4130,13Cr,P9 etc. | Φ32 | ±0.05 | 4’-6’ |
Φ38 | 1 1/2” | ±0.05 | Φ38 | ±0.05 | |||
Φ44 | 1 3/4” | ±0.05 | Φ44 | ±0.05 | |||
Φ50 | 2” | ±0.05 | Φ50 | ±0.05 | |||
Φ57 | 2 1/4” | ±0.05 | Φ57 | ±0.05 | |||
Φ70 | 2 3/4” | ±0.10 | Φ70 | ±0.10 | |||
Φ83 | 3 1/4” | ±0.10 | Φ83 | ±0.10 | |||
Φ95 | 3 3/4” | ±0.10 | Φ95 | ±0.10 | |||
Φ108 | 4 1/4” | ±0.10 | Φ108 | ±0.10 | |||
Φ220 | 8 5/8” | ±0.10 | Φ220 | ±0.10 | |||
Φ280 | 11” | ±0.10 |
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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.
(Φ16~Φ210) Specification | Nominal Dia. | Tolerance | Wall Thickness | Material |
Φ139 | 139.7mm/ 5 1/2” | ±0.05mm | 3.18mm/ 1/8” 6.35mm/ 1/4” 9.53mm/ 3/8” | Alloy steel pipe (16Mn,1Cr5Mo,35CrMo,9Cr1Mo,13Cr,22Cr, A 335P9,4130,K500,718) |
Φ178 | 177.8mm/ 7” | ±0.05mm | ||
Φ210 | 209.55mm/ 8 1/2” | ±0.05mm | ||
Φ280 | 279.4mm/11” | ±0.05mm |
4.Cold Rolled Brass Pipe
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.