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SHJ400 HDPE Butt Fusion Welding Machine 160-400mm
SHJ400 HDPE Butt Fusion Welding Machine 160-400mm
Specifications
Certification :
ISO9001
Planing Tool Power :
2.5 Kw
Model Number :
SHJ400
Standard Clamps :
200, 225, 250, 280, 315, 355, 400mm
MOQ :
1set
Delivery Time :
15-20days
Hydraulic Unit Power :
0.75 Kw
Max Working Pressure :
10 MPa
Payment Terms :
L/C,T/T
Voltage :
380V
Price :
Negotiable
Total Power :
6.25 Kw
Supply Ability :
500set/month
Max Heating Plate Temp :
270°C
Brand Name :
SUNTECHMACH
Working Range :
160-400mm (6" - 16")
Packaging Details :
Wooden case
Place of Origin :
ZHEJIANG, CHINA
Heating Plate Power :
3.0 Kw
Description

The SUNTECHMACH SHJ400 hydraulic butt fusion welding machine welds HDPE, PP and PVDF pipes from 160mm to 400mm (6"-16") with stable hydraulic control and accurate temperature management (max 270°C). With 10 MPa working pressure, it is built for large-diameter water supply and gas pipeline projects.

THE PROBLEM HOW WE SOLVED IT
Large-diameter pipes need high force 10 MPa hydraulic working pressure
Big joints cool unevenly Accurate heating plate control, max 270°C
Pipe alignment is fiddly Complete standard clamp set (200-400mm) included
Machines not built for field use Strong aluminum frame, designed for on-site projects
Key Features
  • 10 MPa Hydraulic Pressure — Reliable force for 400mm-class joints.
  • Accurate Temperature Control — Heating plate up to 270°C.
  • Full Clamp Set Included — 200-400mm standard clamps.
  • 2.5Kw Planing Tool — Powerful facing for large pipe ends.
  • Multi-Material — Welds HDPE, PP and PVDF.
  • Field-Ready Design — Easy operation and maintenance on site.
Technical Specifications
Field Content
Model SHJ400
Working range 160-400mm (6" - 16")
Standard clamps 200, 225, 250, 280, 315, 355, 400mm
Planing tool power 2.5 Kw
Heating plate power 3.0 Kw
Hydraulic unit power 0.75 Kw
Total power 6.25 Kw
Voltage 380V
Max heating plate temp 270°C
Max working pressure 10 MPa
What's Included
  • 1x SHJ400 welding machine
  • 1x Planing tool
  • 1x Heating plate
  • 1x Hydraulic unit
  • Clamps set (200-400mm)
  • 1x Operation manual + 12-month warranty card
Applications
  • HDPE water supply pipeline projects
  • Gas distribution pipelines
  • Sewage and drainage systems
  • Mining slurry and industrial pipelines
  • PP / PVDF industrial pipe welding
  • Municipal field jointing works
Packaging & Quality Assurance

Wooden / plywood case for export. ISO9001 quality system; every machine tested before shipment.

After-Sales Support
  • 12-month warranty
  • WhatsApp: +86-13777804353 ｜ Email: vivian@cnsuntech.com
  • Spare parts supply for all SUNTECHMACH models
Operation Guide
  • A. Pre-Weld Checks
    1. Verify the pressure gauge, timer and temperature controller function correctly before welding.
    2. Check the heating plate Teflon coating integrity; verify it reaches the set temperature.
    3. Check the trimmer works properly and the blades are sharp enough to face the pipe end evenly.
    4. Perform a test welding before production.
  • B. 6-Phase Welding Procedure (per ISO 21307 / DVS 2207)
    1. Phase 1 - Bead-up: approach both pipe ends to the heating plate at (P1 + Pt) pressure until the bead reaches the expected size.
    2. Phase 2 - Soaking: reduce to maximum P2 pressure, keep the ends in touch with the heating plate for the full t2 time. The ends MUST NOT detach from the plate, otherwise the weld must be repeated.
    3. Phase 3 - Plate removal: remove the heating plate within the maximum t3 (changeover) time without damaging the beads.
    4. Phase 4 - Reach welding pressure: bring the ends together, gradually increasing pressure to (P5 + Pt) within t4.
    5. Phase 5 - Welding: keep the ends together at (P5 + Pt) for the full t5 time.
    6. Phase 6 - Cooling: keep the joint under pressure for t6; do not remove or strain the joint. Do NOT use water or compressed air to rush cooling.
  • P1 = bead-up pressure; P2 = max soaking pressure; P5 = welding pressure; Pt = dragging pressure (read from the gauge with pipes clamped; add to all pressure values).
  • C. Safety Notes
    1. Earth the machine; the plug must meet IEC 309 type, IP44 minimum protection. Do not expose the machine to rain or liquids.
    2. Wear safety glasses and gloves; keep a safe distance from the working trimmer and the hot heating plate.
    3. Keep flammable material away from the heating plate and its support.
    4. Unplug the machine from the power source immediately after use.

Standard Material Heating Temp Key Notes
DVS 2207-1:2016 HDPE 220 ± 10°C Max en = 130mm
ISO 21307:2017 (single high pressure) HDPE 215 ± 15°C Heater removal time approx. 5-12s
ISO 21307:2017 (single low pressure) HDPE 225 ± 10°C Longer cool time under pressure
DVS 2207-11:2017 PP 210 ± 10°C Max en = 70mm; buildup time by ambient temp (≤15°C / 15-25°C / 25-40°C)
Common Faults & Solutions
Common faults Reasons Solutions
Narrow or falling bead on the joint Welding pressure too high Reduce pressure to the chart value (P5 + Pt)
Too small bead Pressure not enough while welding Increase to the chart welding pressure
Ditch in the joint Temperature not reached, or changeover time too long Reheat to full temperature; remove plate within t3
Misaligned joint Alignment exceeds 10% of wall thickness Re-align the two ends before welding
Pump motor does not work Power not connected; loose socket; electrical fault Check power, sockets, micro-switch and solid relay
Motor runs slowly with abnormal noise Motor overloaded; oil filter blocked; unstable voltage Check oil filter; confirm working pressure below rated; check voltage
Oil leakage Worn hoses; loose/worn quick couplings; seal not fitted Replace hoses; tighten or replace connectors; restore oil seal
Lack of pressure Oil level low; relief valve open/out of order; blocked coupling; air in system Top up oil; close or replace relief valve; purge air 30s via direction lever
Carriage trembling when moving Air in hydraulic cylinders Move the carriage back and forward via the direction lever to eliminate air
Heating plate cannot heat / display HH Sensor or wiring disconnected; solid relay or controller failure Check sensor and cable connections; replace solid relay or temperature controller
Trimmer cannot face with continuous chips Blunt blade; blade lower than plate Replace or shim the blade
FAQ
  • 1. WHO ARE WE? — We are a professional pipe machine manufacturer in Hangzhou, China. Our team has worked in the pipe tool industry since 1989, and the company was registered in 2014. We are close to Shanghai, Ningbo and Yiwu ports, exporting mainly to North & South America, South Asia and the Middle East.
  • 2. HOW CAN WE GUARANTEE THE QUALITY? — We always test at least one pipe on every machine before shipping. All our machines carry a 12-month warranty.
  • 3. WHAT CAN YOU BUY FROM US? — Pipe threading machines, roll grooving machines, pipe cutting machines, pipe bending machines, plastic pipe welding machines, pressure test pumps and pipe tools.
  • 4. WHY SHOULD YOU BUY FROM US? — We offer a full range of pipe tools; you can mix different models in one shipment. Multilingual support: English, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, Italian.
  • 5. HOW LONG IS THE LEADTIME? — Usually 10-35 days after payment, depending on motor voltage customization.
  • 6. HOW CAN YOU PLACE ORDER? — We accept T/T payment to our company account; online shop payment by credit card is also available.
  • 7. HOW TO SHIP? — By sea to port for bulk orders; door-to-door delivery for small shipments.
  • 8. WHAT IS THE MOQ? — No strict MOQ; however, we recommend an order amount of at least USD 2000 for cost-effective overseas shipping.
  • 9. IS OEM ACCEPTABLE? — Yes. For bulk orders we can make nameplates and customized packaging in your brand.
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SHJ400 HDPE Butt Fusion Welding Machine 160-400mm

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Product Detail
Certification :
ISO9001
Planing Tool Power :
2.5 Kw
Model Number :
SHJ400
Standard Clamps :
200, 225, 250, 280, 315, 355, 400mm
MOQ :
1set
Delivery Time :
15-20days
Contact Supplier
SHJ400 HDPE Butt Fusion Welding Machine 160-400mm

Hangzhou Suntech Machinery Co., Ltd.

Verified Supplier
3 Years
zhejiang, hangzhou
Since 1990
Business Type :
Manufacturer, Distributor/Wholesaler, Agent, Trading Company
Main Products :
Butt Fusion Machine, Electric Pipe Threading Machines, Pressure Test Pumps
Total Annual :
8,000,000-20,000,000
Employee Number :
<200
Certification Level :
Verified Supplier
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