12'' Straight Seam Tube Mill

PRODUCT BRIEF INTRODUCTION

12" 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 ofvarious diameters and sizes by high frequency induction heating and welds seam squeezing.

BASIC TECHNICAL PARAMETERS

Raw Material Parameters:

 Finished Products parameters:

If solid state high frequency welder of 600kW is used, welding speed is estimated as follows:

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

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

Petroleum casing pipe: H40, J55, K55

Structural pipe: Q215, Q235, Q345, 20#

12" OD production target, 4000 working hours/year

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

INTRODUCTION OF MAIN COMPONENTS

1. Coil loading car

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

2. hydraulic double-cone uncoiler

    one side of conical head rotate automatically with hydraulic clutch. Double-cone can open and shut movement or whole movement with arrester. Conical heads adopts hydraulic expansion.

3. leveler

   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. Cutter & welder

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

5. Spiral accumulator   

    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 main unit

    To adopt FFX forming technology.

7. Copy milling saw

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

8. Electric control and line linkage

9. Full line hydraulic system

DELIVERY

Four months after the contract comes into force.

PAYMENT TERMS

30% advance payment after signature of contract, 30% progress payment after two months, and 30% before delivery. Remain amount to be paid within 1 year after delivery.

PACKING

electric control part packed in wooden case, remaining nude packed.

AFTER-SALES SERVICE

The supplier will send technical persons to buyer’s site to carry out installation & testing and provide technical support. Relevant expenses shall be borne by the buyer. During testing, the buyer shall provide required plant building & equipment, testing material and manpower support.

1. PAINTING

Equipment surface shall be coated with antirust paint. Paint color can be decided by the buyer or by the supplier on his discretion.

2.FOUNDATION WORK

The supplier will provide the buyer with foundation drawing of the equipment, with construction and supervision of foundation at the buyer’s own responsibility.

The client shall prepare plant building, equipment foundation, and cooling water pool as per equipment data provided by the supplier. Necessary installation apparatus (lifting rig, tools), installation accessories (wires, conduits, water pipes), and helping labors shall be arranged by the client.

The client shall provide water supply, power supply, and air supply to machine interface.

3.WARRANTY

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

QUALIFICATION CERTIFICATE