711 ERW API Pipe Production Line/28'' Tube Mill

  711 ERW API Pipe Production Line

ZQMC-711

Application range

711 Pipe Welding Line is mainly used to weld round and square/ rectangular pipes. This line utilizes roll forming to process steel strip into various shapes. It is also capable of producing closed profile of various diameters and sizes by high frequency induction heating and welds seam squeezing.

Technical standards: API 5L API 5CT GB/T 3091 JIS G3452 JIS G3444 JIS G3445 ASTM A513 EN 10219

Line pipe: A, B, X42, X46, X52, X56, X60, X65, X70, X80

Structural pipe: Q215, Q235, Q345, 20#

Petroleum casing pipe: H40, J55, K55, N80

711 Parameters

Designing guideline

• To improve the serviceability and productivity
• To meet safety requirements of multi-product small-batch production
• To improve the environment and safety in operation
• To improve the stability of the product quality
• To improve the yield of the line
• To reduce cost of the equipment

Based on above design guideline, this line uses F.F. roll pass design for forming.

Steel grade:Q235, Q345, J55, X60-80, N80

Main composition

1. Hydraulic loading car: 1 unit

   Put on coil on the machine with functions of cent ration and lean

2 Hydraulic double end uncoiler: 1 unit

   Used to hold steel coil supplied by coil loading car and align it with the production line. Positive rotate during coil unpacking and passive rotation during line operation.

3. Head debender and straightener: 1 unit

   It made of two row rollers with same diameter. Up roller installed on the memorial torch stand. Rollers equipped interlacing. Initiative roller is driven by gear box through universal joint. Roller leveler is straightened by two row rollers.

4. Shear and weld machine:1set

   Mainly use for cutting ends and welding together to guarantee mill working continuously.

5. Horizontal accumulator:1set

    Working principle: Hydraulic cylinder of strip feeding unit holds down steel strip. The feeding motor drives the feeding roll to fill strip into the accumulator by friction force. The main motor rotates supply roll of the accumulator cage to store steel strip in the inner and outer storage zone. The drive motor will stop after one coil finished, and will resume feeding after cutting and welding of another coil.

6. Forming and sizing unit: 1 set.

6.1 Forming section

    Roll arrangement at forming zone

   -PR1-BD1-PR2-BD2-BD3-BD4-RVS-CL1-CL2-CL3-CL4—FP1-FP2-FP3-SG-SQ-

6.2 Sizing section

   Arrangement: PR3-DP1-DP2-DP3-DP4-TH1-TH2

7,  Copy milling saw

    Cut the pipe according to fixed length, and send them to the downstream roll table.

8, Electric control part and full line electric interlocking: 1 set

9,Full line hydraulic system: 1 set

Delivery time

within 12 months after receiving down payment

Payment term

30 % down payment by T/T after signing contract, 30% by T/T after 2 months, and balance will be paid before shipment. Balance payment 15 months pay after delivery.

Packing

Electric cabinet by wood, others are nude

After-sales-service

The supplier will send technicians to the plant designated by the buyer for installation and testing, as well as to provide technical supervision, while the buyer shall be responsible for their expenses. For testing, the buyer shall provide plant building and equipment capable of production, testing materials and helping labors

Warranty

The warranty will cover a period of one year starting from delivery for machines under normal operation conditions (Force Majeure excluded)