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 90°elbow

DN D d1 d2 L Z e
15  25.5  20  16  28.75  16  2.75 
20  31  25  20  35.5  19.5 
25  40  32  27  43.5  22.5 
32  49  40  34  45.5  21  4.5 
40  60  50  44  58.5  26 
50  74.5  63  57  76.75  40.5  5.75 
65  85  75  73  82.5  40 
80  102  90  87  99  42 
100  124  110  106  123  55 
125  158  140  135  144  63.5 
150  178  160  156  170  83 
200  251  225  216  243.5  109.5  13 
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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