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Composite Reducer GB Standard

Composite Reducer GB Standard

FRP/PVC-C, FRP/PVC-U Fiberglass Reinforced Plastic Coated Reducer

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App Temperature Bound List
Material        Medium temperature℃ Material Medium temperature℃
PVC-C -20℃~+95℃ PVC-U -5℃~+45℃
FRPP -20℃~+120℃ PPH -20℃~+110℃
PVDF 40℃~+150℃

Product Structural Features

1. Lightweight and High-Strength
The relative density is between 1.5 and 2.0, only 1/4 to 1/5 that of carbon steel, yet its tensile strength approaches or even exceeds that of carbon steel, and its specific strength is comparable to that of high-grade alloy steel.
2. Excellent Corrosion Resistance
FRP is an excellent corrosion-resistant material, offering excellent resistance to air, water, moderate concentrations of acids, alkalis, salts, and various oils and solvents.
3. Excellent Electrical Properties
FRP is an excellent insulating material used in insulators. It maintains good dielectric properties even at high frequencies and has excellent microwave transmittance.
4. Excellent Thermal Properties
FRP has low thermal conductivity and is The thermal conductivity is 1.25-1.67 kJ/s, only 1/100-1/1000 of that of metal, making it an excellent thermal insulation material.
5. Excellent Designability
Flexible design of various structural products to meet specific application requirements, ensuring excellent product integrity and enabling the selection of materials to meet product performance requirements.
6. Excellent Manufacturability
Flexible molding technology can be selected based on product shape, technical requirements, application, and quantity. The process is simple, allows for one-step molding, and offers excellent economic benefits. This is particularly advantageous for complex, challenging, and low-volume products, highlighting its superior processability.

Composite Reducer

DN D1 D2 d1 d2 L Z1 Z2   S
0.6MPa 1.0MPa 1.6MPa
300*100 351  127  315  110  300.5  163.5  61  4.5  6.5  10 
300*125 351  160  315  140  307  163.5  76  4.5  6.5  10 
300*150 351  180  315  160  311.5  163.5  86  4.5  6.5  10 
300*200 351  251  315  225  325  163.5  118.5  4.5  6.5  10 
300*250 351  310  315  280  336.5  163.5  146  4.5  6.5  10 
350*150 390  184  355  160  343  184  86  5  7.5  11.5 
350*200 390  249  355  225  359  184  119  5  7.5  11.5 
350*250 390  308  355  280  370  184  146  5  7.5  11.5 
350*300 390  346  355  315  378  184  164  5  7.5  11.5 
400*200 440  249  400  225  394  206  119  5.5  8.5  12 
400*250 440  308  400  280  405  206  146  5.5  8.5  12 
400*300 440  346  400  315  413  206  164  5.5  8.5  12 
400*350 440  390  400  355  423  206  184  5.5  8.5  12 
450*300 494  346  450  315  454  231  164  6  9.5  14.5 
450*350 494  390  450  355  463  231  184  6  9.5  14.5 
450*400 494  440  450  400  472  231  206  6  9.5  14.5 
500*300 548  346  500  315  494  256  164  6.5  10.5  16 
500*350 548  390  500  355  504  256  184  6.5  10.5  16 
500*400 548  440  500  400  513  256  206  6.5  10.5  16 
500*450 548  494  500  450  525  256  231  6.5  10.5  16 
600*300 692  346  630  315  600  321  164  8  12.5  19 
600*350 692  390  630  355  609  321  184  8  12.5  19 
600*400 692  440  630  400  618  321  206  8  12.5  19 
600*450 692  494  630  450  630  321  231  8  12.5  19 
600*500 692  548  630  500  641  321  256  8  12.5  19 

DN D1 D2 d1 d2 L Z1 Z2 S
0.6MPa 1.0MPa
 1.6MPa
20*15 32  27  25  20  42  19  16  2  2.5  3.5 
25*15 40  27  32  20  48.5  22  16  2  2.5  3.5 
25*20 40  32  32  25  49  22  19  2  2.5  3.5 
32*20 50  32  40  25  57  26  19  2  2.5  3.5 
32*25 50  40  40  32  57  26  22  2  2.5  3.5 
40*25 61  40  50  32  67  31  22  2  2.5  3.5 
40*32 61  50  50  40  67  31  26  2  2.5  3.5 
50*25 75  40  63  32  80.5  38  22  2  2.5  3.5 
50*32 75  50  63  40  80.5  38  26  2  2.5  3.5 
50*40 75  61  63  50  81  38  31  2  2.5  3.5 
65*25 88  40  75  32  93.5  44  22  2  3  4 
65*32 88  50  75  40  93.5  44  26  2  3  4 
65*40 88  61  75  50  94  44  31  2  3  4 
65*50 88  75  75  63  95  44  38  2  3  4 
80*25 105  40  90  32  108  51  22  2  3  4 
80*32 105  50  90  40  108  51  26  2  3  4 
80*40 105  61  90  50  08.5  51  31  2  3  4 
80*50 105  75  90  63  109.5  51  38  2  3  4 
80*65 105  88  90  75  110.5  51  44  2  3  4 
100*40 127  61  110  50  130  61  31  2  3  4 
100*50 127  75  110  63  130  61  38  2  3  4 
100*65 127  88  110  75  130  61  44  2  3  4 
100*80 127  105  110  90  130  61  51  2  3  4 
125*50 161  75  140  63  143  76  38  2.5  4  5.5 
125*65 161  88  140  75  146  76  44  2.5  4  5.5 
125*80 161  105  140  90  149  76  51  2.5  4  5.5 
125*100 161  127  140  110  154  76  61  2.5  4  5.5 
150*65 184  88  160  75  162  86  44  2.5  4  5.5 
150*80 184  105  160  90  165  86  51  2.5  4  5.5 
150*100 184  127  160  110  170  86  61  2.5  4  5.5 
150*125 184  161  160  140  176  86  76  2.5  4  5.5 
200*80 260  105  225  90  217  119  51  3.5  5  7 
200*100 260  127  225  110  221  119  61  3.5  5  7 
200*125 260  161  225  140  228  119  76  3.5  5  7 
200*150 260  184  225  160  233  119  86  3.5  5  7 
250*200(Φ250*225) 288  260  250  225  265  131  119  4  5.5  8.5 
250*100(Φ280*110) 310  127  280  110  272.5  146  61  4  5.5  8.5 
250*125(Φ280*140) 310  160  280  140  278  146  76  4  5.5  8.5 
250*150(Φ280*160) 310  180  280  160  283  146  86  4  5.5  8.5 
250*200(Φ280*225) 310  251  280  225  297  146  118.5  4  5.5  8.5 

Note: The dimension S of composite pipe fittings may be subject to minor adjustments by mutual agreement between the supplier and the purchaser.

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About Us
Kaixin Pipeline Technologies Co., Ltd.

Founded in 1999, Kaixin Pipeline Technologies Co., Ltd. is a high-tech enterprise integrating R&D, manufacturing, sales, and service. The company holds multiple prestigious certifications, including National High-Tech Enterprise, “Little Giant” Specialized and Sophisticated SME, National Single Product Champion (Cultivation), Provincial Technology-based SME, Ningbo Specialized and Sophisticated SME, Ningbo Single Product Champion (Cultivation), Ningbo Polymer Pipe & Valve Technology R&D Center, District-Level Green Factory, Ningbo Four-Star Management Innovation Enterprise, and Enterprise Data Management Capability Maturity Level 2.

We specialize in developing, producing, and supplying non-metallic corrosion-resistant products for chemical applications, including plastic valves, pipes, pipe fittings, and corrosion-resistant pumps. Our product portfolio spans materials such as PVC-C, PVC-U, PVDF, PPH, and FRPP, with a comprehensive range of types and specifications. Notably, our butterfly valves can reach DN1000 in diameter, while pipes and fittings extend up to DN800, addressing market gaps and maintaining our competitive edge in the industry.

Guided by the principle of “Technology-Driven, Keeping Pace with the Times,” Kaixin allocates nearly RMB 10 million annually to R&D. We ensure superior product quality through standardized automated manufacturing and strict sourcing of imported raw materials. Aligned with our international development strategy, we continuously monitor global market trends and leverage digital channels to bring high-quality “Made in China” products to customers worldwide.

Ningbo • Fenghua R&D & Production Base

With a total investment of RMB 200 million, Kaixin Ultra-Pure Pipe Technology (Ningbo) Co., Ltd. has established a new materials laboratory in collaboration with universities and research institutes, built a modern manufacturing base, and installed 8 fully automated production lines for modified plastics and 8 for polymer materials. The facility is dedicated to the R&D, production, and application of new modified plastics and polymer materials. Kaixin is also committed to attracting top talent across disciplines, continuously driving product innovation and brand development, with the goal of becoming a globally recognized leader in the R&D and manufacture of polymer valves, pipes, and fittings.
Certificate Of Honor
  • 一种化工用超大型蝶阀
  • 一种抗腐蚀耐热改性塑料及其制备工艺
  • 一种耐紫外老化纳米改性塑料及其制备工艺
  • 一种移动式塑料管道切割装置
  • 一种方便收纳隐藏的饮用水管道阀门
  • 化工用超大型蝶阀
  • 一种蝶阀阀瓣结构
  • 一种蝶阀阀体结构及控制阀
  • 一种法兰球阀结构
  • 一种隔膜阀
  • 一种隔膜阀执行机构
  • 一种管道连接用法兰
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