Great Wall Welded Pipe Equipment

Founded in 1999, Shijiazhuang Great Wall Welded Pipe Equipment Co. Ltd is located in Shijiazhuang City, Hebei Province, which is a famous base of pipe mill industry in China. We are a high and new technology enterprise specialized in design, development and manufacture of high frequency welded pipe line, ERW pipe mill line, precision pipe mill line, stainless steel pipe mill line, square and rectangular pipe mill line, cold roll forming equipment, slitting line, etc. Shijiazhuang Great Wall is the pioneer that has the key processing and internationally advanced technology of whole-set welded pipe mill. We are qualified ISO 9001:2000 Quality Management System company.

We have been appraised as "Enterprise with Top Credit Standing of 5 stars" as an official example company of China Supplier Business Credit System by CIIC Credit Evaluation Office since 2008 . We also awarded "Annual Trustworthy and Faithful Enterprise" by "Hebei Province Quality Inspection Association" since the year of 2007. Great Wall is the "Honored Trustworthy Membership" by HeBei Quality and Technology Supervision Association.

Cold Roll Forming Line

Cold Roll Forming Line MAIN DETAILED SPECIFICATION

(1) Coil Width: About 850mm

(2) Suitable Coil Thickness: 0.3-0.7mm

(3) Suitable Raw Materials: Pre-painted steel coil, Galvanized steel coil, Aluminum coil; 

(4) Forming steps: About 14 steps, that means 14 rollers

(5) Roller material: 45# steel; , with hard chrome on surface, polishing

(6) Length tolerance: ±2.0mm

(7) Line speed: 15m/min

welded pipe equipment features

welded pipe equipment features

1.Processing speed: under normal circumstances preparation and roll welding part 5-7 class, second class homework, 10 people a day can produce more than 20 12 meters long finished cage (preparation, roll welding, reinforcement installation, detection pipe installation, installation guide pad block etc.), for high speed railway construction in 1 m pile cage once a Nissan 75 day 9 meters of cage (675 M / day) the production record, work efficiency very high.

tube mill equipment features

tube mill equipment features:

1. Technology corona discharge high-quality quartz ozone cell

2. Adjustable ozone output 0-100%

3. Inner temperature controller to prevent heat generating

4. Ozone generated tube cooling way: water-cooling system

5. Special design to avoid water return

6. 120mins timer controller or continuous running

7. External / Inner air compressor

8. Inner refrigerant dryer

9. Stainless steel 304 case

10. Inner PSA oxygen generator unit

11. CE approved

12. Lifespan>= 20, 000 hour

Welded Pipe Making Machine

Welded Pipe Making Machine.This equipment is specially used for producingΦ 13-Φ 50.8mm(1/2'' 2''), δ 0.6-2.0mm high-frequency straight seam welded pipe and corresponding square pipe and special-shaped pipe(δ ≤ 1.5mm). The composition of equipment is from uncoiler to fixed length cutting saw. Rolling speed can be adjusted correspondingly within suitable range of pipe diameter and wall thickness.

(1)Hot or cold-rolled steel strip (As per GB700-88 or GB1591-88)

(2)Material: Low-carbon steel, low alloy steelδ S≤ 345Mpa, δ B≤ 610Mpa

(3)The thickness of steel strip: 0.6-2.0mm (As per GB708-88)

(4)The width of steel strip: 40-160mm

(5)I. D. Of steel coil: Φ 450-Φ 550mm

(6)O. D. Of steel coil: Φ 800-Φ 1200mm

(7)Maximum weight coil: 1000kgs

Flattening Machine

Pipe Mill Line composition

Line composition:

Hydraulic double mandrel uncoiler

Shear and TIG welder

Horizontal strip accumulator

Forming, (seam guide, welding, squeezing, scraping), cooling , sizing and straightener section.

Computer flying saw cut-off.

Roller straightener

End milling and chamfering machine

Baling press

Run out roll table, inspection table & collectors.

Solid state H.F. induction welder: 200 kw, Solid state (or vacuum tube type)

Rolls: rolls are manufactured complying with AISI D3 D2 or E52100

Electrical control system