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.

Nominal Diameter NPS	Outside Diameterat Bevel				Center to End
	D		D1		C	M
	Ⅰ	Ⅱ	Ⅰ	Ⅱ
1/2X1/2X1/4	21.3	18	17.3	14	25	25
1/2X1/2X1/8	21.3	18	13.7	10	25	25
3/4X3/4X1/2	26.9	25	21.3	18	29	29
3/4X3/4X1/4	26.9	25	17.3	14	29	29
1X1X3/4	33.7	32	26.9	25	38	38
1X1X1/2	33.7	32	21.3	18	38	38
1.1/4x1.1/4x1	42.4	38	33.7	32	48	48
1.1/4x1.1/4x3/4	42.4	38	26.9	25	48	48
1.1/4x1.1/4x1/2	42.4	38	21.3	18	48	48
1.1/2x1.1/2x1.1/4	48.3	45	42.4	38	57	57
1.1/2x1.1/2x1	48.3	45	33.7	32	57	57
1.1/2x1.1/2x3/4	48.3	45	26.9	25	57	57
1.1/2x1.1/2x1/2	48.3	45	21.3	18	57	57
2x2x1.1/2	60.3	57	48.3	45	64	60
2x2x1.1/4	60.3	57	42.4	38	64	57
2x2x1	60.3	57	33.7	32	64	51
2x2x3/4	60.3	57	26.9	25	64	44
2.1/2x2.1/2x2	73	76	60.3	57	76	70
2.1/2x2.1/2x1.1/2	73	76	48.3	45	76	67
2.1/2x2.1/2x1.1/4	73	76	42.4	38	76	64
2.1/2x2.1/2x1	73	76	33.7	32	76	57
3X3X2.1/2	88.9	89	73	76	86	83
3X3X2	88.9	89	60.3	57	86	76
3X3X1.1/2	88.9	89	48.3	45	86	73
3X3X1.1/4	88.9	89	42.4	38	86	70
3.1/2x3.1/2x3	101.6		88.9		95	92
3.1/2x3.1/2x2.1/2	101.6		73		95	89
3.1/2x3.1/2x2	101.6		60.3		95	83
3.1/2x3.1/2x1.1/2	101.6		48.3		95	79
4x4x3.1/2	114.3		101.6		105	102
4x4x3	114.3	108	88.9	89	105	98
4x4x2.1/2	114.3	108	73	76	105	95
4x4x2	114.3	108	60.3	57	105	89
4x4x1.1/2	114.3	108	48.3	45	105	86
5x5x4	141.3	133	114.3	133	124	117
5x5x3.1/2	141.3		101.6		124	114
5x5x3	141.3	133	88.9	89	124	111
5x5x2.1/2	141.3	133	73	76	124	108
5x5x2	141.3	133	60.3	57	124	105
6x6x5	168.3	159	141.3	133	143	137
6x6x4	168.3	159	114.3	108	143	130
6x6x3.1/2	168.3		101.6		143	127
6x6x3	168.3	159	88.9	89	143	124
6x6x2.1/2	168.3	159	73	76	143	121
8x8x6	219.1	219	168.3	159	178	168
8x8x5	219.1	219	141.3	133	178	162
8x8x4	219.1	219	114.3	108	178	156
8x8x3.1/2	219.1		101.6		178	152
10x10x8	273	273	219.1	219	216	203
10x10x6	273	273	168.3	159	216	194
10x10x5	273	273	141.3	133	216	191
10x10x4	273	273	114.3	108	216	191
12x12x10	323.9	325	273	273	254	241
12x12x8	323.9	325	219.1	219	254	229
12x12x6	323.9	325	168.3	159	254	219
12x12x5	323.9	325	141.3	133	254	216
14x14x12	355.6	377	323.9	325	279	270
14x14x10	355.6	377	273	273	279	257
14x14x8	355.6	377	219.1	219	279	248
14x14x6	355.6	377	168.3	159	279	238
16x16x14	406.4	426	355.6	377	305	305
16x16x12	406.4	426	323.9	325	305	295
16x16x10	406.4	426	273	273	305	283
16x16x8	406.4	426	219.1	219	305	273
16x16x6	406.4	426	168.3	159	305	264
18x18x16	457	480	406.4	426	343	330
18x18x14	457	480	355.6	377	343	330
18x18x12	457	480	323.9	325	343	321
18x18x10	457	480	273	273	343	308
18x18x8	457	480	219.1	219	343	298
20x20x18	508	530	457	480	381	368
20x20x16	508	530	406.4	426	381	356
20x20x14	508	530	355.6	377	381	356
20x20x12	508	530	323.9	325	381	346
20x20x10	508	530	273	273	381	333
20x20x8	508	530	219.1	219	381	324
22x22x20	559		508		419	406
22x22x18	559		457		419	394
22x22x16	559		406.4		419	381
22x22x14	559		355.6		419	381
22x22x12	559		323.9		419	371
22x22x10	559		273		419	359

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.

HUNAN LIANGMING METAL MATERIAL CO.,LTD was founded in 2009,which is a professional manufacturer and exporter of scaffolding material,steel pipes and pipe fittings.Its headquarter located in Changsha city,Hunan province and production base located in Daqiuzhuang town,Jinghai District,Tianjin.

Our main products is scaffolding pipe, steel plank, coupler and ringlock system,We have 3 automatic production lines for steel plank ,3 automatic production lines for scaffolding pipe,5 automatic production lines for steel prop,and more than 80 pcs advanced equipment for cutting,drilling,welding,painting and package.Through the integration of the tow technology,our scaffolding took the lead in the realization of the whole pipeline operation mode,and part of the production equipment achieves intelligent.for now,our production capacity is about 200000 Tons,including steel prop,frame,scaffolding system,jack base,plank and other accessories.our products are exported to Asia,North America,Oceania and Europe.

Our scaffolding strictly implement the requirements of ISO 9001 quality management system,adhering to the implementation of quality strategy,leading the development of the industry "business philosophy,toprovide you withsatisfactory and reliable products. 

We always try our best to provide the best solution and the best service to our valuable clients efficiently.