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.
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.
Size: OD: 10.3-762mm
WT: 6-35mm
Length: 5.8/6/11.8/12m
Standard: ASTM A53, ASTM A519, ASTM A500, ASTM A252, JIS G3441/G3445,EN 10210/10297
Seamless mechanical tubing is manufactured to meet your specific application requirements.
Seamless mechanical tubing is furnished in both cold-drawn and hotfinished form in a wide range of sizes, from 1.375" to 7.750" OD and from 0.188" to 1.625" wall thickness, as shown on the chart to the right.
Seamless mechanical tubing
A-519
D.O.M mechanical tubing
A-513 T5
E.R.W mechanical tubing
A-513 T1 or T2
Process of meachanical tubing
Mill of seamless mechanical tubin
Cold drawn seamless mechanical tubing---Diameter Tolerances
|
OD Size Range Inches,Inclusive |
WallPercent of OD |
OD Inches |
ID Inches |
Quenched&TemperedOD & ID ± Inches |
OD Size Range mm ,Inclusive |
WallPercent of OD |
OD Inches |
ID Inches |
Quenched&TemperedOD & ID ± mm |
||||
|
Over |
Under |
Over |
Under |
Over |
Under |
Over |
Under |
||||||
|
0.500-1.699 1.700-2.099 2.100-2.499 |
All All All |
.005 .006 .007 |
.000 .000 .000 |
.000 .000 .000 |
.005 .006 .007 |
.015 .020 .023 |
12.70- 43.16 43.17- 53.32 53.33- 63.48 |
All All All |
0.13 0.15 0.18 |
0.00 0.00 0.00 |
0.00 0.00 0.00 |
0.13 0.15 0.18 |
0.38 0.51 0.58 |
|
2.500-2.899 2.900-3.299 3.300-3.699 3.700-4.099 |
All All All All |
.008 .009 .010 .011 |
.000 .000 .000 .000 |
.000 .000 .000 .000 |
.008 .009 .010 .011 |
.025 .028 .030 .033 |
63.49- 73.64 73.65- 83.80 83.81- 93.96 93.97-104.12 |
All All All All |
0.20 0.23 0.25 0.28 |
0.00 0.00 0.00 0.00 |
0.00 0.00 0.00 0.00 |
0.20 0.23 0.25 0.28 |
0.64 0.71 0.76 0.84 |
|
4.100-4.499 4.500-4.899 4.900-5.299 5.300-5.549 |
All All All All |
.012 .013 .014 .015 |
.000 .000 .000 .000 |
.000 .000 .000 .000 |
.012 .013 .014 .015 |
.036 .038 .041 .044 |
104.13-114.28 114.29-124.44 124.45-134.60 134.61-140.95 |
All All All All |
0.30 0.33 0.36 0.38 |
0.00 0.00 0.00 0.00 |
0.00 0.00 0.00 0.00 |
0.30 0.33 0.36 0.38 |
0.91 0.97 1.04 1.12 |
|
5.550-5.999 |
Under 6 6 to 71/2Over 71/2 |
.010 .009 .018 |
.010 .009 .000 |
.010 .009 .009 |
.010 .009 .009 |
.047 .047 .047 |
140.96-152.38 |
Under 6 6 to 71/2Over 71/2 |
0.25 0.23 0.46 |
0.25 0.23 0.00 |
0.25 0.23 0.23 |
0.25 0.23 0.23 |
1.19 1.19 1.19 |
|
6.000-6.499 |
Under 6 6 to 71/2Over 71/2 |
.013 .010 .020 |
.013 .010 .000 |
.013 .010 .010 |
.013 .010 .010 |
.050 .050 .050 |
152.39-165.08 |
Under 6 6 to 71/2Over 71/2 |
0.33 0.25 0.51 |
0.33 0.25 0.00 |
0.33 0.25 0.25 |
0.33 0.25 0.25 |
1.27 1.27 1.27 |
|
6.500-6.999 |
Under 6 6 to 71/2Over 71/2 |
.015 .012 .023 |
.015 .012 .000 |
.015 .012 .012 |
.015 .012 .012 |
.057 .053 .053 |
165.09-177.78 |
Under 6 6 to 71/2Over 71/2 |
0.38 0.30 0.58 |
0.38 0.30 0.00 |
0.38 0.30 0.30 |
0.38 0.36 0.30 |
1.45 1.35 1.35 |
|
7.000-7.499 |
Under 6 6 to 71/2Over 71/2 |
.018 .013 .026 |
.018 .013 .000 |
.018 .013 .013 |
.018 .013 .013 |
.065 .056 .056 |
177.79-190.48 |
Under 6 6 to 71/2Over 71/2 |
0.46 0.33 0.66 |
0.46 0.33 0.00 |
0.46 0.33 0.33 |
0.46 0.33 0.33 |
1.65 1.42 1.42 |
|
7.500-8.000 |
Under 6 6 to 71/2Over 71/2 |
.020 .015 .030 |
.020 .015 .000 |
.020 .015 .015 |
.020 .015 .015 |
.070 .060 .060 |
190.49-203.20 |
Under 6 6 to 71/2Over 71/2 |
0.51 0.38 0.76 |
0.51 0.38 0.00 |
0.51 0.38 0.38 |
0.51 0.38 0.38 |
1.78 1.52 1.52 |
Cold drawn seamless mechanical tubing---Wall Thickness Tolerances
|
Wall ThicknessPercent of OD |
Maximum Percent Over & Under Nominal |
Wall ThicknessPercent of OD |
Maximum Percent Over & Under Nominal |
||
|
Under 1.499” ID |
1.500” ID & Over |
Under 38.07mm ID |
38.07mm ID & Over |
||
|
Under 10 |
10.0 |
7.5 |
Under 10 |
10.0 |
7.5 |
|
10 to 25 |
10.0 |
6.0 |
10 to 25 |
10.0 |
6.0 |
|
Over 25 |
12.5 |
7.5 |
Over 25 |
12.5 |
7.5 |
Hot-finished seamless mechanical tubing---Diameter Tolerances
|
OD Size Range Inches, Inclusive |
As Rolled or Annealed OD, ± Inches |
Quenched &TemperedOD & ID ± Inches |
OD Size Range mm Inclusive |
As Rolled or Annealed OD, ± mm |
Quenched & TemperedOD & ID ± mm |
|
2.000-2.499 |
.017 |
.027 |
50.80- 63.48 |
0.43 |
0.686 |
|
2.500-2.999 |
.019 |
.029 |
63.49- 76.17 |
0.48 |
0.737 |
|
3.000-3.499 |
.021 |
.032 |
76.18- 88.87 |
0.53 |
0.813 |
|
3.500-3.999 |
.023 |
.035 |
88.88-101.57 |
0.58 |
0.889 |
|
4.000-4.499 |
.025 |
.038 |
101.58-114.28 |
0.64 |
0.965 |
|
4.500-4.999 |
.027 |
.041 |
114.29-126.97 |
0.69 |
1.041 |
|
5.000-5.499 |
.029 |
.044 |
126.98-139.67 |
0.74 |
1.118 |
|
5.500-5.999 |
.031 |
.047 |
139.68-152.38 |
0.79 |
1.194 |
|
6.000-6.499 |
.033 |
.050 |
152.39-165.08 |
0.84 |
1.270 |
|
6.500-6.999 |
.035 |
.053 |
165.09-177.78 |
0.89 |
1.346 |
|
7.000-7.499 |
.037 |
.056 |
177.79-190.48 |
0.94 |
1.422 |
Hot-finished seamless mechanical tubing---Wall Thickness Tolerances
|
Wall ThicknessPercent of OD |
Maximum Percent Over & Under Nominal |
Wall ThicknessPercent of OD |
Maximum Percent Over & Under Nominal |
|
OD 2” and Over |
OD 50.08mm and Over |
||
|
Under 10 10 to 25 |
10.0 7.5 |
Under 10 10 to 25 |
10.0 7.5 |
E-mail: sales@eastern-steels.com
