About Us
Eastern Steel Manufacturing Co.,Ltd is a leading manufacturer and distributor of seamless steel pipe, welded steel pipe, OCTG products and fittings. We supply first-step processing, semi-finished parts and finished parts to help our clients meet fabrication requirements beyond their capacity or to improve operations by moving forward the pre-production processing.
Product Category
News
In this column you can find the steel pipe related articles you need, including industry trends, product standards and materials, and some technical guidelines.
Services
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Facility
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Projects
Many years of large-scale project experience in various fields（Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical etc.）, professional project team is responsible from receiving until the end of the project.
(4) The thread surface of the casing and coupling should be smooth, and no burrs, tears or other defects sufficient to interrupt the threads will affect the strength and tight connection.
|
outer diameter |
theoretical weight |
wall thickness |
inside diameter |
nominal diameter |
Coupling outer diameter |
Thread type |
Steel grade |
length |
|
139.7 （5-1/2） |
20.85（0.244） 23.09（15.50） 25.32（17.00） 29.79（20.00） 34.26（23.00） |
6.20(0.244) 6.98(0.275) 7.72(0.304) 9.17(0.361) 10.54(0.415) |
127.3(5.012) 125.7(4.950) 124.3(4.892) 121.4(4.778) 118.6(4.670) |
124.1(4.887) 122.6(4.825) 121.1(4.767) 118.2(4.653) 115.4(4.545) |
153.7 (6.050) |
Round thread, trapezoidal thread |
j55 n80 p110 |
8m-12m (2602-39.4) |
|
177.8 （7） |
25.52917.00） 29.79（20.00） 34.26（23.00） 38.73（26.00） 43.20（29.00） 47.66（32.00） 52.13（35.00） 56.60（38.00） |
5.87(0.231) 6.91(0.272) 8.05(0.317) 9.19(0.362) 10.36(0.408) 11.51(0.453) 12.65(0.498) 13.72(0.540) |
166.1(6.538) 164.2(6.456) 161.7(6.366) 159.4(6.276) 157.1(6.180) 154.8(6.090) 152.5(6.004) 150.4(5.430) |
162.9(6.413) 160.8(6.331) 158.5(6.204) 156.2(6.151) 153.9(6.059) 151.6(5.969) 149.3(5.879) 147.2(5.795) |
194.5 (7.656) |
Round thread, trapezoidal thread |
j55 n80 p110 |
8m-12m (2602-39.4) |
|
219.1 （8-5/8） |
35.75（24.00） 41.71（28.00） 47.66（32.00） 53.62（36.00） 59.58（40.00） |
6.71(0.264) 7.72(0.304) 8.94(0.352) 10.16(0.400) 11.43(0.450) |
205.7(8.093) 203.7(8.020) 201.2(7.927) 198.8(7.827) 196.2(7.724) |
202.5(7.972) 200.5(7.894) 198.0(7.795) 195.6(7.701) 193.0(7.598) |
244.5 (9.625) |
Round thread, trapezoidal thread |
j55 n80 p110 |
8m-12m (2602-39.4) |
|
244.5 （9-5/8） |
48.11(32.30) 53.62（36.00） 59.58（40.00） 64.79（43.50） 70.01（47.00） 71.69（53.50） |
7.92(0.312) 8.94(0.352) 10.03(0.395) 11.05(0.435) 11.99(0.472) 13.84(0.545) |
228.7(9.001) 226.6(8.921) 224.4(8.835) 222.4(8.755) 220.5(8.681) 216.8(8.535) |
244.7(8.845) 222.6(8.765) 220.4(8.679) 218.4(8.599) 216.5(8.525) 212.8(8.379) |
269.6 (10.6250 |
Round thread, trapezoidal thread |
j55 n80 p110 |
8m-12m (2602-39.4) |
|
273.0 （10-3/4） |
48.78（32.75） 60.32（40.50） 67.77（45.50） 75.96（51.00） 82.67（55.50） |
7.09(0.279) 8.89(0.350) 10.26(0.400) 11.43(0.450) 12.57(0.495) |
258.9(10.192) 255.3(10.050) 252.7(9.950) 250.2(9.850) 247.9(9.760) |
254.9(10.035) 251.3(9.894) 248.8(9.794) 246.2(9.694) 243.9(9.604) |
298.5 (11.752) |
Round thread, trapezoidal thread |
j55 n80 p110 |
8m-12m (2602-39.4) |
|
339.7 （13-3/8） |
71.50（48.00） 81.18（54.50） 90.86（61.00） 101.69（68.00） |
8.38(0.330) 9.65(0.380) 10.92(0.430) 12.19(0.480) |
322.9(12.715) 320.4(12.615) 317.9(12.515) 315.3(12.415) |
319.0(12.559) 316.5(12.459) 313.9(12.359) 311.4(12.259) |
365.1 (14.374) |
Round thread, trapezoidal thread |
j55 n80 p110 |
8m-12m (2602-39.4) |
|
73.0 （2-7/8） |
9.53（6.40） 11.62（7.90） 12.81（8.60） |
5.51(0217) 7.01(0.276) 7.82(0.308) |
62.00(2.441) 59.00(2.323) 57.40(2.259) |
59.61(2.347) 56.62(2.229) 54.99(2.165) |
88.9 (3.500) |
Round thread |
j55 n80 |
8.5m-9.5m (27.9-31.2) |
|
88.9 （3-1/2） |
11.47（7.70） 15.19（10.20） |
5.49(0.216) 7.34(0.289) |
77.9(3.067) 76.0(2.992) |
24.25(2.943) 21.04(2.797) |
107.95 (4.250) |
Round thread |
j55 n80 |
8.5m-9.5m (27.9-31.2) |
|
114.3 （4-1/2） |
18.77（12.60） |
6.88(0.271) |
100.5(3.957) |
97.37(3.833) |
132.08 (5.200) |
Round thread |
j55 n80 |
8.5m-9.5m (27.9-31) |
E-mail: sales@eastern-steels.com
