
Hot melt connection stands out as a premier choice for PVDF pipes, celebrated for its reliability. This method involves heating the junction of the pipes and fittings until molten, achieving a seamless bond upon cooling. Revered for its secure connection, impeccable sealing, and formidable pressure endurance, it caters to PVDF systems across a spectrum of pressure demands. Mastery of this method requires adept use of specialized hot melt machinery and meticulous control of heat and timing to uphold exceptional connection integrity.
Socket connection emerges as a straightforward and user-friendly method for uniting PVDF pipes. By inserting the pipeline into a fitting's socket, secured by clamps or fasteners, it offers an efficient solution for small-diameter, low-pressure systems. This method's allure lies in its simplicity, ease of installation and removal, and reliable sealing. However, it warrants caution, particularly in high-pressure or elevated temperature settings, to mitigate potential risks.
Flange connection is perfectly engineered for extensive PVDF pipeline networks. By affixing flanges to pipes and fittings, then coupling them with bolts, it delivers unmatched strength, superior sealing, and adaptability across diverse environments. Despite its resilience, this method demands a considerable array of bolts and gaskets, rendering the installation process more intricate and cost-intensive.
Clamp connection introduces an innovative approach to PVDF pipe connections, effortlessly securing pipes and fittings via specialized clamps. Celebrated for its ease of installation and removal, alongside robust sealing capabilities, it is adept for systems of varying diameters and pressures. This connection type also facilitates swift repairs and replacements, significantly curtailing maintenance expenses.
Hot melt socket connection ingeniously blends the virtues of both hot melt and socket methodologies. This hybrid technique involves heating the pipeline to a molten state, inserting it into a fitting's socket, and securing it with precise clamps or fasteners. It is distinguished by its solid connection, optimal sealing, and exceptional pressure tolerance, making it particularly suitable for systems with stringent connection criteria.

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: Due to diverse requirements, only select series parameters are showcased. Please contact our sales team for comprehensive product details and color options.

Naisfu Precision Technology (Taizhou, Jiangsu) Co., Ltd. excels in the spheres of production, R&D, sales, technical consultancy, and after-sales service for fluoroplastic raw materials and profiles. Our offerings boast an extensive range of sizes and specifications, aligning with international standards (GB, DIN, ANSI, JIS, BS) and tailored designs. Guided by the ethos 'technology produces excellence, quality creates brand', we've cultivated enduring recognition and trust. Our flagship products (PVDF, FEP, ETFE) are celebrated across industries - chemical, semiconductor, electronics, construction, biopharmaceuticals, and solar cells, for their outstanding performance.



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.
