HDPE Electrofusion Double Sealing Stub End for Water

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Electrofusion double-sealing stub end manufactured from HDPE material, designed for water supply systems, certified to ISO 4427 standards to ensure high-strength sealing and corrosion resistance.

Diameter Range: DN20–DN800
Pressure Rating: PN10–PN16
Applicable Standards: ISO 4427, EN 12201, ASTM F714
Stock Availability: In stock
Sample Policy: Free sample available
Lead Time: 5–30 days

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The HDPE Electrofusion Double Sealing Stub End for Water is a dual-seal electrofusion stub end designed for reliable flange transitions in water supply and industrial water systems.

规格 Φdn	L (mm)	A (mm)	Φd (mm)	PN16	PN10	PN20	PN25
50	78	71	4.7/4.0	√
63	77	71	4.7/4.0	√
75	77	70	4.7/4.0	√
90	85	77	4.7/4.0	√
110	104	95	4.7/4.0	√
125	105	95	4.7/4.0	√
140	107	94	4.7/4.0	√
160	125	113	4.7/4.0	√
200	123	110	4.7/4.0	√
225（8孔）	122	109	4.7/4.0	√
225（12孔）	122	109	4.7/4.0	√
250	150	140	4.7/4.0	√
280	150	145	4.7/4.0	√
315	155	145	4.7/4.0	√
355	155	135	4.7/4.0	√
400	155	133	4.7/4.0	√
450	155	140	4.7/4.0	√
500	190	170	4.7/4.0	√
560	205	180	4.7/4.0	√
630	205	190	4.7/4.0	√
法兰355	150	132	4.7/4.0		√
法兰400	150	135	4.7/4.0		√
法兰500	190	170	4.7/4.0		√
法兰560	205	180	4.7/4.0		√
法兰630	205	190	4.7/4.0		√
法兰710	270	245	4.7/4.0		√
法兰800	273	250	4.7/4.0		√
法兰900	300	285	4.7/4.0		√
法兰1000	342	325	4.7/4.0		√
110	105	95	4.7/4.0			√
160	125	112	4.7/4.0			√
200	125	105	4.7/4.0			√
250	150	137	4.7/4.0			√
315（12孔）	173	160	4.7/4.0			√
315（16孔）	173	160	4.7/4.0			√
法兰50	75	29	4.7/4.0				√
法兰63	76	32	4.7/4.0				√
法兰75	82.5	37	4.7/4.0				√
法兰90	83.5	40	4.7/4.0				√
法兰110	110	71	4.7/4.0				√
法兰160	114.5	80	4.7/4.0				√
法兰200	120	67	4.7/4.0				√
法兰250	150	133	4.7/4.0				√

Key Features of HDPE Electrofusion Double Sealing Stub End for Water

Double-seal structure ensures long-term leak-proof reliability.
Electrofusion technology achieves molecular-level welding strength.
Compliant with ISO 4427 potable water safety standards.
Resistant to chemical corrosion and UV aging.
Smooth inner wall minimizes hydraulic losses.

Manufacturing Process of HDPE Electrofusion Double Sealing Stub End for Water

Each is produced by precision injection molding with embedded electrofusion components.

Critical Process Parameters of HDPE Electrofusion Double Sealing Stub End for Water

Melt temperature control: 190±2°C
Injection pressure accuracy: ±0.5 MPa
Cooling rate gradient management
Electrofusion coil resistance consistency: ±1%
Sealing surface roughness: Ra≤3.2μm

Raw Material Characteristics of HDPE Electrofusion Double Sealing Stub End for Water

Density: 950–965 kg/m³ (ISO 1183)
Melt Flow Index: 0.25 g/10min (190°C/5kg)
Tensile Strength: ≥26 MPa (ISO 527)
Elastic Modulus: 1100 MPa (ISO 178)
Environmental Stress Crack Resistance: >1000 hrs

Typical Applications of HDPE Electrofusion Double Sealing Stub End for Water

is used in municipal water supply network retrofits.
serves industrial cooling water circulation systems.
is installed in building water main connections.
is used at pressure nodes in irrigation systems.

Application Scenarios of HDPE Electrofusion Double Sealing Stub End for Water

Flange transitions and water main connections — is the standard stub end for these applications.

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HDPE Electrofusion Double Sealing Stub End for Water