We can produce and supply to you various steel pipes according to international standard.Hot dip galvanized steel pipes are used in the following fields, steel structure, build structure, transportation of low pressure liquid and gas etc.Our products are exported to about 60 countries in the world.We get a lot of recognition from many customers since our good quality and service.
Standards  JIS G3444, BS1387,ASTM A53, EN10255, EN10240, EN10220, EN10219, EN39,GOST54929
Type:ERW and Seamless, Round and Rectangular or Square
Steel grade:Q195, Q215,Q235,Q345,ST37,ST52,STK500,SS400
Surface:Galvanized or Black or Paint
Purpose:Scaffolding system, Fence tube, Structural tube
Certificate:ISO,JIS,CE,UL,GOST,API
N.D. | O.D | W.T. | WEIGHT | SCH | TEST  PRESSURE | NO.of  THREADS PER INCH | ||||||||
PLAINÂ ENDS | ||||||||||||||
kg/m | kg/ft | Grade A | Grade B | |||||||||||
in | in | mm | in | mm | blk | gal | blk | gal | psi | kg/cm2 | psi | kg/cm2 | ||
1/2 | 0.840 | 21.3 | 0.109 | 2.77 | 1.27 | 1.35 | 0.39 | 0.41 | 40 | 700 | 50 | 700 | 50 | 14 |
3/4 | 1.050 | 26.7 | 0.113 | 2.87 | 1.69 | 1.79 | 0.52 | 0.55 | 40 | 700 | 50 | 700 | 50 | 14 |
1 | 1.315 | 33.4 | 0.133 | 3.38 | 2.50 | 2.65 | 0.76 | 0.81 | 40 | 700 | 50 | 700 | 50 | 11-1/2 |
1-1/4 | 1.660 | 42.2 | 0.140 | 3.56 | 3.39 | 3.59 | 1.03 | 1.10 | 40 | 1200 | 84 | 1300 | 91 | 11-1/2 |
1-1/2 | 1.900 | 48.3 | 0.145 | 3.68 | 4.05 | 4.29 | 1.23 | 1.31 | 40 | 1200 | 84 | 1300 | 91 | 11-1/2 |
2 | 2.375 | 60.3 | 0.154 | 3.91 | 5.44 | 5.77 | 1.66 | 1.76 | 40 | 2300 | 162 | 2500 | 176 | 11-1/2 |
2-1/2 | 2.875 | 73.0 | 0.203 | 5.16 | 8.63 | 9.15 | 2.63 | 2.79 | 40 | 2500 | 176 | 2500 | 176 | 8 |
3 | 3.500 | 88.9 | 0.125 | 3.18 | 6.72 | 7.12 | 2.05 | 2.17 | --- | 1290 | 91 | 1500 | 105 | 8 |
0.156 | 3.96 | 8.29 | 8.79 | 2.53 | 2.68 | --- | 1600 | 112 | 1870 | 131 | ||||
0.188 | 4.78 | 9.92 | 10.52 | 3.02 | 3.21 | --- | 1930 | 136 | 2260 | 159 | ||||
0.216 | 5.49 | 11.29 | 11.97 | 3.44 | 3.65 | 40 | 2220 | 156 | 2500 | 176 | ||||
3-1/2 | 4.000 | 101.6 | 0.125 | 3.18 | 7.72 | 8.18 | 2.35 | 2.49 | --- | 1120 | 79 | 1310 | 92 | 8 |
0.156 | 3.96 | 9.53 | 10.10 | 2.90 | 3.08 | --- | 1400 | 98 | 1640 | 115 | ||||
0.188 | 4.78 | 11.41 | 12.09 | 3.48 | 3.69 | --- | 1690 | 119 | 1970 | 139 | ||||
0.226 | 5.74 | 13.57 | 14.38 | 4.14 | 4.38 | 40 | 2030 | 143 | 2370 | 167 | ||||
4 | 4.500 | 114.3 | 0.125 | 3.18 | 8.71 | 9.23 | 2.65 | 2.81 | --- | 1000 | 70 | 1170 | 82 | 8 |
0.156 | 3.96 | 10.78 | 11.43 | 3.29 | 3.48 | --- | 1250 | 88 | 1460 | 103 | ||||
0.188 | 4.78 | 12.91 | 13.68 | 3.93 | 4.17 | --- | 1500 | 105 | 1750 | 123 | ||||
0.237 | 6.02 | 16.07 | 17.03 | 4.90 | 5.19 | 40 | 1900 | 134 | 2210 | 155 | ||||
5 | 5.563 | 141.3 | 0.156 | 3.96 | 13.41 | 14.21 | 4.09 | 4.33 | --- | 1010 | 71 | 1180 | 83 | 8 |
0.188 | 4.78 | 16.09 | 17.06 | 4.90 | 5.20 | --- | 1220 | 86 | 1420 | 100 | ||||
0.219 | 5.56 | 18.61 | 19.73 | 5.67 | .01 | --- | 1420 | 100 | 1650 | 116 | ||||
0.258 | 6.55 | 21.77 | 23.08 | 6.64 | 7.03 | 40 | 1670 | 117 | 1950 | 137 | ||||
6 | 6.625 | 168.3 | 0.188 | 4.78 | 19.27 | 20.43 | 5.87 | 6.23 | --- | 1020 | 72 | 1190 | 84 | 8 |
0.219 | 5.56 | 22.31 | 23.65 | 6.80 | 7.21 | --- | 1190 | 84 | 1390 | 98 | ||||
0.250 | 6.35 | 25.36 | 26.88 | 7.73 | 8.19 | --- | 1360 | 96 | 1580 | 111 | ||||
0.280 | 7.11 | 28.26 | 29.96 | 8.61 | 9.13 | 40 | 1520 | 107 | 1780 | 125 | ||||
8 | 8.625 | 219.1 | 0.188 | 4.78 | 25.26 | 26.78 | 7.70 | 8.16 | --- | 780 | 55 | 920 | 65 | --- |
0.203 | 5.16 | 27.22 | 28.85 | 8.30 | 8.79 | --- | 850 | 60 | 1000 | 70 | ||||
0.219 | 5.56 | 29.28 | 31.04 | 8.92 | 9.46 | --- | 910 | 64 | 1070 | 75 | ||||
0.322 | 8.18 | 42.55 | 45.10 | 12.97 | 13.75 | 40 | 1340 | 94 | 1570 | 110 |
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