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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.
Kaixin Pipeline Technology Co., Ltd., founded in 1999, is a high-tech enterprise integrating R&D, manufacturing, sales, and services. It has been recognized as a National-level Key Cultivation Enterprise for "Specialized, Sophisticated, Differential and Innovative" Little Giants, a National-level Key Cultivation Enterprise for "Single Champions," a Provincial Sci-Tech SME, a Ningbo Municipal "Specialized, Sophisticated, Differential and Innovative" SME, a Municipal Key Cultivation Enterprise for "Single Champions," a Municipal Polymer Pipe and Valve Technology R&D Center, a District Green Factory, a Municipal Enterprise Management Innovation (Four-Star) Enterprise, and a Data Management Capability Maturity (Level 2) Enterprise.
As a famous China Composite Reducer GB Standard Suppliers and Composite Reducer GB Standard Factory, the company specializes in the R&D, production, and sales of non-metallic chemical anti-corrosion products, including plastic valves, plastic pipes, plastic fittings, and corrosion-resistant pumps. Its material portfolio covers PVC‑C, PVC‑U, PVDF, PPH, and FRPP, offering a comprehensive range of products and specifications. The maximum diameter for butterfly valves reaches DN1000, while pipes and fittings can be manufactured up to DN800. Leveraging its municipal‑level technology R&D center, Kaixin has achieved full-process control from raw material selection and automated production to final product inspection. Its products are widely applied in corrosive environments across industries such as chemical processing, electroplating, and environmental protection, meeting customers' specific requirements for large diameters, temperature resistance, pressure resistance, and other special conditions.
Kaixin steadfastly follows the development philosophy of "technology‑driven and in step with the times," investing nearly ten million yuan annually in R&D. Through automated standardized production and strict selection of imported raw materials, the company ensures consistent product quality. Guided by its foreign trade development strategy, Kaixin keeps close to market trends and leverages the "Internet+" model to promote "Made in China" on the global stage.
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