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STB100 Manual Hydraulic Pipe Bender 1/2"-4" (21.3-100mm)

Basic Properties

Place of Origin:ZHEJIANG, CHINA
Brand Name:SUNTECHMACH
Certification:ISO9001
Model Number:STB100

Trading Properties

Minimum Order Quantity:1set
Price:Negotiable
Standard Packaging:Wooden case
Delivery Time:30days
Payment Terms:L/C,T/T
Supply Ability:500set/month
Specifications
Model: STB100 Capacity: 1/2"-4" (21.3-100mm)
Pipe Wall Thickness: 2.75-6.0mm Bending Dies: 9 Sets: 1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4"
Max Pressure: 23T (4" / Φ100) Max Stroke: 370mm
Drive: Manual Hydraulic Pump Standards: GB/T 3091, DIN 2440, EN 10255, BS 1387
Weight: 155 Kg Packing Size: 1180 X 460 X 230 Mm
Product Description

STB100 SUNTECHMACH Aluminum Manual Type Hydraulic Pipe Bender 1/2"-4"

Specifications

FieldContent
NameHeavy Duty Manual Type Pipe Bender (Top Quality Cylinder & Seals)
Capacity1/2"-4" (21.3-100mm)
Bending Dies9 sets: 1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 4"
Max Pressure23T (for 4" / Φ100)
Max Stroke370mm
Pipe Wall Thickness2.75-6.0mm
Weight155 kg
Packing Size1180 x 460 x 230 mm

Product Description

The SUNTECHMACH STB100 heavy-duty manual type hydraulic pipe bender is designed for precision cold bending of thick-walled pipes (gas, water and steam pipes, black iron pipes, galvanized pipes, Schedule 40 & 80) up to 90°, following GB/T 3091, DIN 2440, EN 10255 and BS 1387 standards. With 23T of hydraulic force and a 370mm stroke, it bends 1/2"-4" pipe — the top tier for heavy industrial and boiler making work. Built on a one-piece welded steel frame with wheels and foldable stand.

THE PROBLEMHOW WE SOLVED IT
4" heavy pipe cannot be bent on site23T max pressure handles 1/2"-4" (21.3-100mm) up to 90°
Bending dies sold separately9 sets of bending shoes included: 1/2" to 4"
Deep bends need multiple passes370mm long stroke for one-pass deep bends
155kg machine hard to moveIntegrated wheels and foldable stand — one-person transport

Key Features

  • 23T Bending Force — Top-tier power for 1/2"-4" (21.3-100mm) thick-wall steel pipe.
  • 9 Bending Shoes Included — 1/2" to 4", full range out of the box.
  • 370mm Long Stroke — Deep one-pass bends without repositioning.
  • One-Piece Welded Frame — Rated for 23T continuous pressure without deformation.
  • Wheels & Foldable Stand — Roll across the site; one-person setup in under 60 seconds.
  • No Power Required — Manual hydraulic pump for any job site.

What's Included

  • 1x STB100 bending machine
  • 9x Bending shoes (1/2" to 4")
  • 1x Hydraulic hand pump & handle
  • 1x Swagging blocks set
  • 1x Operation manual + 12-month warranty card

Applications

  • Plumbing, sanitary and heating installation on construction sites
  • Fire protection and sprinkler pipework
  • Water & gas pipeline construction
  • Apparatus and boiler making
  • HVAC piping
  • Industrial maintenance workshops

Packaging & Quality Assurance

Packed in carton + pallet (wooden case for export). Every machine is tested before shipment under our ISO9001 quality system; at least one pipe is bent on every machine before packing.

After-Sales Support

  • 12-month warranty
  • Spare parts supply for all SUNTECHMACH models
  • WhatsApp: +86-13777804353 | Email: vivian@cnsuntech.com
  • Multilingual support team (English / Russian / Japanese / French)

Operation Guide

  1. Tighten the release valve by turning clockwise.
  2. Loosen the vented oil bolt.
  3. Grease the die cover, swagging blocks and the pipe to be bent.
  4. Lift the upper plate and affix the bending die to the end of the cylinder ram.
  5. Turn the swagging blocks so their grooves face the pipe die.
  6. Make sure the pipe extends beyond the swagging blocks (accounts for pipe shortening during bending).
  7. Set the swagging blocks closer together for short pipes.
  8. Return the upper plate to position and advance the die.
  9. Use the forming pump to apply pressure and bend the pipe to the desired angle (max 90°).
  10. Release pressure with the release valve; the ram retreats automatically; lift the upper plate to remove the bent pipe.
  11. For a clean right-angle finish, start with the swagging blocks at the pipe end and work inward.

Common Faults & Solutions

Common faultsReasonsSolutions
Ram won't fully extendAir in hydraulic systemPurge air: loosen vented oil bolt, tilt cylinder 45°, pump until air removed
Slow response / weak forceLow hydraulic oil levelTop up quality hydraulic oil to about 1.2L
Oil leaks from cylinder sealsToo much oilKeep oil level at about 1.2L, not above
Pipe slips during bendingSwagging blocks set incorrectlyAdjust blocks; make sure pipe extends beyond blocks
Bend angle inaccurateWrong die or block settingCheck die seating and block positions

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.
Contact Details
Hangzhou Suntech Machinery Co., Ltd.

Contact Person: Mr. Sales Team

Tel: 00-86-13777804353

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