Hunan Liangming Metal Material Co., Ltd.
Customer is first ! We always try our best to provide the best solution and the best service to our valuable clients efficiently
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Our factory produces seamless butt welded carbon steel pipe fittings, stainless steel pipe fittings,
(elbows, tees, reducers, heads, bends, pipe caps, stub end), flanges (flat welding flanges, butt welding
flanges, flange covers, blind flange), compensators, and industrial welded pipe fittings for forged high-pressure pipes.
 PN1.0MPa | ||||||||
| Nominal Diameter NPS | Connection dimension | Sealing face | Thickness of flange | |||||
| D | K | L | Threaded | d | f | c | ||
| n | Threaded dimension | |||||||
| 1/2 | 90 | 60 | 14 | 4 | M12 | 41 | 2 | 14 |
| 3/4 | 95 | 65 | 14 | 4 | M12 | 46 | 2 | 14 |
| 1 | 105 | 75 | 14 | 4 | M12 | 56 | 2 | 16 |
| 1.1/4 | 115 | 85 | 14 | 4 | M12 | 65 | 2 | 16 |
| 1.1/2 | 140 | 100 | 18 | 4 | M16 | 76 | 2 | 18 |
| 2 | 150 | 110 | 18 | 4 | M16 | 84 | 2 | 18 |
| 2.1/2 | 165 | 125 | 18 | 4 | M16 | 99 | 2 | 20 |
| 3 | 185 | 145 | 18 | 4 | M16 | 118 | 2 | 20 |
| 3.1/2 | 200 | 160 | 18 | 8 | M16 | 132 | 2 | 20 |
| 4 | 220 | 180 | 18 | 8 | M16 | 156 | 2 | 22 |
| 5 | 250 | 210 | 18 | 8 | M16 | 184 | 2 | 22 |
| 6 | 285 | 240 | 22 | 8 | M20 | 211 | 2 | 24 |
| 8 | 340 | 295 | 22 | 8 | M20 | 266 | 2 | 24 |
| 10 | 395 | 350 | 22 | 12 | M20 | 319 | 2 | 26 |
| 12 | 445 | 400 | 22 | 12 | M20 | 370 | 2 | 26 |
| 14 | 505 | 460 | 22 | 16 | M20 | 429 | 2 | 26 |
| 16 | 565 | 515 | 26 | 16 | M24 | 480 | 2 | 28 |
| 18 | 615 | 565 | 26 | 20 | M24 | 530 | 2 | 28 |
| 20 | 670 | 620 | 26 | 20 | M24 | 582 | 2 | 28 |
| 24 | 780 | 725 | 30 | 30 | M27 | 682 | 2 | 34 |
Factory
Testing Center
Our company's testing center has various experimental equipment, including Rockwell hardness testers,
metallographic microscopes, coordinate measuring machines, yield testing benches, bending testers,
tensile testers, high-density ultrasonic flaw detectors, light cutting microscopes, vertical optical meters,
and other professional equipment; The testing center currently has 15 professional testing personnel,
including 5 quality engineers and 2 quality chief engineers, all of whom have higher degrees.