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. Excellent Heat Resistance
Reinforced polypropylene is a material made by adding glass fiber to pure PP, expanding its application range. Its enhanced heat resistance overcomes the inherent mechanical strength disadvantage of PP, while maintaining its excellent corrosion resistance and increasing its operating temperature.
2. High Mechanical Strength and Excellent Wear Resistance
Its strength, stiffness, hardness, and heat resistance surpass those of low-pressure polyethylene.
Its low linear expansion coefficient provides excellent acid, alkali, and heat resistance.
3. Excellent Impact Toughness
Molding Shrinkage: 1.0-2.5%, significantly reducing shrinkage and significantly improving stiffness. It offers excellent electrical properties and high-frequency insulation, unaffected by humidity.
4. Wide Range of Applications
FRPP, due to its low material cost, long service life, and easy installation, is widely used in piping systems for the chemical, chemical fiber, chlorine-alkali, dye, water supply and drainage, food, pharmaceutical, sewage treatment, and electrolysis industries.

FRPP Reducing Tee

DN D1 D2  d1 d2 d3   d4 L h Z1 Z2 e1 e2
20*15 31.5  26   25  20  20    16  65  29.5  19  16  3.2   3 
25*15 41  27   32  20  27    16  79.5  33.5  22  16  4.5   3.5 
25*20 41  31.5   32  25  27    20  79.5  36.5  22  19  4.5   3.2 
32*15 50  25.5   40  20  34    16  96  37.25  26  16   2.7 
32*20 50  31.5   40  25  34    20  96  40.25  26  19   3.2 
32*25 50  41   40  32  34    27  96  43.65  26  22   4.5 
40*15 63  27   50  20  44    16  115.5  42.85  31  16  6.5   3.5 
40*20 63  33   50  25  44    20  115.5  45.75  31  19  6.5   4 
40*25 63  43   50  32  44    27  115.5  48.65  31  22  6.5   5.5 
40*32 63  50.5   50  40  44    34  115.5  52.45  31  26  6.5   5.2 
50*15 79  32.5   63  20  55    16  142  52  38  16   6.2 
50*20 79  32.5   63  25  55    20  142  52  38  19   3.7 
50*25 79  40.5   63  32  55    27  142  55.3  38  22   4.2 
50*32 79  50   63  40  55    34  142  60  38  26 
50*40 79  62.5   63  50  55    44  142  63.5  38  31   6.2 
65*25 93.5  40.5   75  32  74    27  165  70.5  44  22  9.2   4.2 
65*32 93.5  50   75  40  74    34  165  64  44  26  9.2 
65*40 93.5  62.5   75  50  74    44  165  70  44  31  9.2  6.2 
65*50 93.5  79   75  63  74    55  165  79  44  38  9.2 
80*20 112  42   90  25  87    20  194.5  68.5  50.5  18.5  11  8.5 
80*25 112  42   90  32  87    27  194.5  68.5  50.5  22  11 
80*32 112  51.5   90  40  87    34  194.5  73.5  50.5  26  11   5.7 
80*40 112  63   90  50  87    44  194.5  78.5  50.5  31  11   6.5 
80*50 112  79   90  63  87    55  194.5  83  50.5  38  11 
80*65 112  94   90  75  87    74  194.5  92  50.5  44  11   9.5 
100*25 132.5  40.5   110  32  106    27  234.5  77  61  22.5  11.2   4.2 
100*32 132.5  50   110  40  106    34  234.5  85  61  26  11.2 
100*40 132.5  63   110  50  106    44  234.5  89  61  31  11.2  6.5 
100*50 132.5  78.5   110  63  106    55  234.5  89  61  37.5  11.2   7.7 
100*65 132.5  94   110  75  106    74  234.5  100  61  44  11.2   9.5 
100*80 132.5  113   110  90  106    87  234.5  107  61  51  11.2  11.5 
125*50 161  112.5   140  63  135    55  295  132.5  77  37.5  10.5   7.7 
125*80 161  112.5   140  90  135    87  295  132.5  77  50.5  10.5  11.2 
125*100 161  133   140  110  135    106  295  138.5  77  60.5  10.5  11.5 
150*50 182  78.5   160  63  156    55  333  117.5  85.5  38  11   7.7 
150*65 182  94   160  75  156    74  333  128.5  85.5  44  11   9.5 
150*80 182  112   160  90  156    87  333  132.5  85.5  51  11  11 
150*100 182  133.5   160  110  156    106  333  142.5  85.5  60.5  11  11.7 
150*125 182  160.5   160  140  156    135  333  159.5  85.5  77  11  10.2 
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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