
Hot melt connection stands as a cornerstone in PVDF pipe connectivity, renowned for its efficiency and reliability. By heating the interface between pipeline and fittings to a molten state, a seamless and enduring bond is achieved upon cooling. This method boasts exceptional firmness, superior sealing capabilities, and remarkable pressure resistance, making it ideal for PVDF pipeline systems across various pressure levels. Specialized equipment is essential, with precise control of heating parameters ensuring unparalleled connection quality.
Socket connection offers a straightforward and efficient solution for linking PVDF pipes, characterized by its simplicity and effectiveness. By inserting the pipe into the fitting's socket and securing it with specialized clamps, this method ensures a stable and well-sealed connection. It is particularly suited for smaller diameter pipelines under lower pressures, offering benefits such as easy installation and disassembly. However, caution is advised in high-pressure or high-temperature environments.
Flange connection is the go-to choice for larger PVDF pipeline systems, offering a robust and adaptable linking solution. By fitting flanges to pipes and securing them with bolts, this method guarantees a firm and well-sealed connection. Ideal for complex environments, flange connection provides flexibility and strength, though it necessitates numerous bolts and gaskets, making the process more involved and costly.
Clamp connection represents a modern approach to PVDF pipe connectivity, combining ease of installation with reliable performance. Specialized clamps secure the fittings, ensuring a tight and adaptable connection across various diameters and pressure levels. This method facilitates quick repairs and replacements, significantly reducing maintenance time and costs, making it an excellent choice for dynamic pipeline systems.
Hot melt socket connection ingeniously merges the strengths of hot melt and socket connection methods. By heating the pipeline to a molten state before insertion into the fitting's socket, followed by securing with clamps, this approach delivers a firm, well-sealed, and pressure-resistant connection. It's the perfect fit for systems demanding exceptional connection integrity under rigorous conditions.

Nominal Diameter DN(mm) | Diameter Φ(mm) | Wall thickness S(mm) | Inside diameter Z(mm) | Height L(mm) |
DN15 | φ20 | 3.5 | 19 | 38 |
DN20 | φ25 | 4 | 24 | 52 |
DN25 | φ32 | 4.5 | 31 | 62 |
DN32 | φ40 | 5 | 40 | 73 |
DN40 | φ50 | 5 | 49 | 85 |
DN50 | φ63 | 7.5 | 62 | 100 |
DN65 | φ75 | 8.5 | 72 | 118 |
DN80 | φ90 | 9.5 | 88 | 138 |
DN100 | φ110 | 12 | 108 | 167 |
Nominal Diameter DN(mm) | Diameter Φ(mm) | Wall thickness S(mm) | Inside diameter Z(mm) | Height L(mm) |
DN15 | φ20 | 3.5 | 19 | 40 |
DN20 | φ25 | 4 | 24 | 47 |
DN25 | φ32 | 4.5 | 31 | 56 |
DN32 | φ40 | 5 | 39 | 66 |
DN40 | φ50 | 6 | 49 | 80 |
DN50 | Φ63 | 7.5 | 62 | 98 |
DN65 | φ75 | 8 | 74 | 114 |
DN80 | Φ90 | 9.5 | 88 | 134 |
DN100 | φ110 | 10.5 | 108 | 160 |


Nominal Diameter DN(mm) | Diameter Φ(mm) | Wall thickness S(mm) | Inside diameter Z(mm) | Height L(mm) |
DN80 | φ80 | 5 | 90 | 146 |
DN100 | φ100 | 5 | 110 | 182 |
φ125 | 6 | 125 | 200 | |
DN125 | φ140 | 7 | 140 | 215 |
DN150 | φ160 | 8 | 160 | 250 |
φ180 | 8.5 | 180 | 280 | |
DN200 | φ200 | 10 | 200 | 315 |
φ225 | 10.5 | 225 | 348 |
Nominal Diameter DN(mm) | Diameter Φ(mm) | Wall thickness S(mm) | Inside diameter Z(mm) | Height L(mm) |
DN15 | φ20 | 4 | 19 | 31 |
DN20 | φ25 | 4 | 24 | 40 |
DN25 | φ32 | 5 | 31 | 44 |
DN32 | φ40 | 5 | 39 | 48 |
DN40 | φ50 | 6 | 49 | 53 |
DN50 | Φ63 | 7 | 62 | 61 |
DN65 | φ75 | 9 | 72 | 69 |
DN80 | φ90 | 10 | 88 | 79 |
DN100 | φ110 | 11 | 107 | 90 |


Nominal Diameter DN(mm) | Diameter Φ(mm) | Wall thickness S(mm) | Inside diameter Z(mm) | Height L(mm) |
DN15 | φ20 | 5 | 29 | 19 |
DN20 | φ25 | 6 | 35 | 23 |
DN25 | φ32 | 6.5 | 43 | 30 |
DN32 | φ40 | 8 | 54 | 38 |
DN40 | Φ50 | 8 | 64 | 48 |
DN50 | φ63 | 9 | 80 | 62 |
Nominal Diameter DN(mm) | Diameter Φ(mm) | Wall thickness S(mm) | Inside diameter Z(mm) | Height L(mm) |
DN15 | φ20 | 6 | 31 | 19 |
DN20 | φ25 | 6 | 36 | 24 |
DN25 | φ32 | 6.5 | 43 | 30 |
DN32 | φ40 | 8 | 53 | 37 |
DN40 | φ50 | 8.5 | 65 | 48 |
DN50 | Φ63 | 9 | 78 | 60 |


Nominal Diameter DN(mm) | Diameter Φ(mm) | Wall thickness S(mm) | Inside diameter Z(mm) | Height L(mm) |
DN15 | φ20 | 3.5 | 19 | 53 |
DN20 | φ25 | 3.5 | 25 | 62 |
DN25 | φ32 | 4 | 31 | 74 |
DN32 | φ40 | 5 | 39 | 86 |
DN40 | φ50 | 6 | 49 | 100 |
DN50 | Φ63 | 7 | 62 | 121 |
DN65 | Φ75 | 8 | 73 | 40 |
DN80 | φ90 | 10 | 88 | 164 |
DN100 | φ110 | 12 | 108 | 196 |
Nominal Diameter DN(mm) | Diameter Φ(mm) | Wall thickness S(mm) | outside diameter Z(mm) | Height L(mm) | center height H(mm) |
DN65 | φ75 | 4 | 75 | 178 | 87 |
DN80 | φ90 | 4.5 | 92 | 190 | 92 |
DN100 | φ110 | 5 | 110 | 218 | 110 |
φ125 | 6 | 125 | 225 | 113 | |
DN125 | φ140 | 7 | 140 | 241 | 120 |
DN150 | φ160 | 8 | 160 | 275 | 135 |
φ180 | 8 | 180 | 307 | 154 | |
DN200 | φ200 | 10 | 200 | 335 | 165 |
φ225 | 11 | 225 | 445 | 225 | |
DN250 | φ280 | 16 | 278 | 490 | 240 |


N(mm) | Φ(mm) | S(mm) | Z(mm) | S1(mm) | D1(mm) | L(mm) | H(mm) |
DN20*15 | φ25*20 | 5 | 23 | 4 | 27 | 64 | 40 |
DN25*15 | φ32*20 | 4.5 | 31 | 4 | 27 | 76 | 45 |
DN25*20 | φ32*25 | 4.5 | 31 | 5 | 33 | 76 | 45 |
DN32*15 | φ40*20 | 6 | 38 | 4 | 27 | 88 | 50 |
DN32*20 | Φ40*25 | 6 | 38 | 5 | 33 | 88 | 50 |
DN32*25 | φ40*32 | 6 | 38 | 4.5 | 40 | 100 | 50 |
DN40*15 | φ50*20 | 6.5 | 49 | 4 | 27 | 100 | 60 |
DN40*20 | φ50*25 | 6.5 | 49 | 5 | 33 | 100 | 60 |
DN40*25 | φ50*32 | 6.5 | 49 | 4.5 | 40 | 100 | 60 |
DN40*32 | φ50*40 | 6.5 | 49 | 6 | 50 | 120 | 60 |
DN50*15 | φ63*20 | 7.5 | 61 | 4 | 27 | 120 | 75 |
DN50*20 | φ63*25 | 7.5 | 61 | 5 | 33 | 120 | 75 |
DN50*25 | φ63*32 | 7.5 | 61 | 4.5 | 40 | 120 | 75 |
DN50*32 | Φ63*40 | 7.5 | 61 | 6 | 50 | 120 | 75 |
DN50*40 | φ63*50 | 7.5 | 61 | 6.5 | 62 | 140 | 75 |
DN65*15 | φ75*20 | 8 | 74 | 4 | 27 | 140 | 87 |
DN65*20 | φ75*25 | 8 | 74 | 5 | 33 | 140 | 87 |
DN65*25 | φ75*32 | 8 | 74 | 4.5 | 40 | 140 | 87 |
DN65*32 | φ75*40 | 8 | 74 | 6 | 50 | 140 | 87 |
DN65*40 | φ75*50 | 8 | 74 | 6.5 | 62 | 140 | 87 |
DN65*50 | φ75*63 | 8 | 74 | 7.5 | 76 | 140 | 87 |
DN80*15 | φ90*20 | 10 | 88 | 4 | 27 | 165 | 92 |
DN80*20 | φ90*25 | 10 | 88 | 5 | 33 | 165 | 92 |
DN80*25 | φ90*32 | 10 | 88 | 4.5 | 40 | 165 | 92 |
DN80*32 | φ90*40 | 10 | 88 | 6 | 50 | 165 | 92 |
DN80*40 | φ90*5 0 | 10 | 88 | 6.5 | 62 | 165 | 92 |
DN80*50 | φ90*63 | 10 | 88 | 7.5 | 76 | 165 | 92 |
DN80*65 | φ90*75 | 10 | 88 | 8 | 9 | 165 | 92 |
DN100*15 | φ110*20 | 8 | 107 | 4 | 27 | 198 | 110 |
DN100*20 | φ110*25 | 8 | 107 | 5 | 33 | 198 | 110 |
DN100*25 | φ110*32 | 8 | 107 | 4.5 | 40 | 198 | 110 |
DN100*32 | φ110*40 | 8 | 107 | 6 | 50 | 198 | 110 |
DN100*40 | φ110*50 | 8 | 107 | 6.5 | 62 | 198 | 110 |
DN100*50 | Φ110*63 | 8 | 107 | 7 | 76 | 198 | 110 |
DN100*65 | φ110*75 | 8 | 107 | 8 | 90 | 198 | 110 |
DN100*80 | φ110*90 | 8 | 107 | 10 | 108 | 198 | 110 |
Note: Recognizing diverse needs, we showcase only select series parameters. For comprehensive product details and color options, please reach out to our dedicated sales team.

At Naisfu Precision Technology (Taizhou, Jiangsu) Co., Ltd., we spearhead innovation in fluoroplastic raw materials and profiles. Our extensive product lineup adheres to global standards like GB, DIN, ANSI, JIS, and BS, alongside bespoke and on-demand production capabilities. Guided by our ethos, 'technology produces excellence, quality creates brand,' we have become a trusted name across industries such as chemical, semiconductor, electronics, construction, biopharmaceuticals, and solar cells, with our flagship products (PVDF, FEP, ETFE) earning acclaim for their remarkable performance and quality.



Q:Are you a manufacturer or a trading company?
A:We are a manufacturer with our own production equipment.
Q:How long does the delivery cycle take?
A:Generally, it takes 7-15 days after payment, depending on the quantity of orders you provide.
Q. What is your sample policy?
A: We could offer the sample for free charge but your esteemed company will pay the cost of freight.
Q. Do you test all your goods before delivery?
A: Yes, we have 100% inner inspection in our own laboratory and plant before delivery.
Q: How do you make our business long-term and good relationship?
A: 1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them.
