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: PVC-U is only 1/10 the weight of cast iron, making it easy to transport and install, reducing costs.
2. Superior Chemical Resistance: PVC-U has excellent resistance to acids and alkalis, with the exception of strong acids and alkalis near their saturation point.
3. Durable: PVC-U offers excellent weather resistance and is resistant to corrosion by bacteria and fungi.
4. Non-conductive: PVC-U is non-conductive and is not susceptible to corrosion by electrolysis or electric current, eliminating the need for secondary processing. It is non-flammable and does not support combustion, eliminating fire safety concerns.
5. Low resistance and high flow rate: The smooth inner wall minimizes fluid flow loss, and dirt is less likely to adhere to the smooth pipe surface, making maintenance simple and cost-effective.
6. Easy Installation and Low Cost: Cutting and joining are simple. PVC glue has proven to be safe, reliable, easy to use, and cost-effective.

PVC-U Vanstone Flange

DN D1 D2 D3 D4 d1 d2 L T h Z n-Φ
15  27  59  70  95  20  18  22  16  1.5  16  4-Φ15X20.5
20  32  70  75  105  25  23  25  18  1.5  19  4-15X17.5
25  40  79  90  125  32  29  28  18  1.5  22  4-Φ15X20.5
32  50  89  100  140  40  36  31.5  20  1.5  26  4-Φ18X24.5
61  98  110  150  50  37  20  31  4-Φ18X24
50  75  120  125  165  63  58  44  25  38  4-Φ18X20.5
65  88  140  145  185  75  69  50  25  44  4-Φ18X20.5
80  105  150  160  200  90  84  57  26  2.5  51  8-Φ18X23
100  127  175  190.5  229  110  105  67  26  2.5  61  8-Φ18X26
125  161  210  250  140  130  84  28  12.5  77  8-Φ19
150  182  240  285  160  150  93  31  12.5  85  8-Φ23
200  249  295  339  225  215  127  36  16  119  8-Φ23X25
200  254  295.8  341  225  215  127  33.1  16  119  12-Φ22
250  308  350  395  280  267  154  40.5  16.5  144  12-Φ23
300  346  400  445  315  305  170  43  18  160  12-Φ23
350  395  460  505  355  340  176  43  16  164.5  16-Φ23
400  442  515  570  400  382  219  43  22  200  16-Φ27
450  494  565  625  450  430  220  40  27  210  20-Φ26
500  548  620  670  500  475  210  43  25  185  20-Φ27
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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. As a famous China PVC-U Slip-on Flange DN15-500 GB Standard Suppliers and PVC-U Slip-on Flange DN15-500 GB Standard Factory, 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.
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