Quotation for Ф630～1620mm Spiral Welded Pipe Line

1.  Foreward:

This forming unit, designed and manufactured by ourinstitute after research and absorption of the advanced technology at home andaborad. It has been found to complete meet with the API-5LS standards byadvanced design, realible performance, light weight and less investment.

2.  Technicalperformance and data:

2.1 Coilouter dia.:                                         Φ1000-1800   mm

      Inner dia.:                                                     Φ610-760     mm

         Width:                           680-1600    mm

Thickness:                           4-16        mm

Material:                           Q235

      Crescent:                                                      ≤10/10000    mm

   Max.weight:                           25            t

2.2 Pipeouter dia.:                                                   Φ630-1600    mm

  Wallthickness:                          4-16      mm

        Length:                           8-12       mm

    Spiralangle:                           45-75º

2.3 Unit model: frontal swinging, center positioning

2.4 Welding: double-side sub-merged arc automaticallywelding

  Inside welder:     single-wire                          DC-1500

  Outside welder:     single-wire                                 DC-1500

  Welding speed:                                                            0.8-2.0m/mm

2.5Delivery speed:                                                            0.7-2.6m/mm

  Forming way:three-roll bending, four-row outside control roll sizing

2.6Annual output:                   threeshifts           20,000-40,000 tons

2.7Workshop dynamic data:                      

Voltage                  220/380  v

                                            Compressedair                     0.4-0.6  MPa

Tap-water                   0.2-0.4  MPa

3. Process:

coil peeler→pinching&leveling→electric verticalrollcut head&tail →buttwelding→electric vertical roll→rotary shear→scrapreeler→edge milling→electric vertical roll→ delivery→pre-bending&guideboard→forming→inside welding→outside welding→flying saw→pulling out→repairwelding→ beveling&end-facing →hydrotesting → X ray →      finished product inspection→collecting

4.  Scope of supply:

5.    Mainequipment introduction:

5.1 Uncoiler:

Function: used to bear coile, double-coneheaddismounting, double carrier roll driving

   Uncoiling way:                              AC motor

Centering way: hydraulicpressure  

5.2Pinching&levelingMachine:

Function:level and forward the strip feeded by uncoiler

Structure:Composed of leveling roll , piching roll and the gears.

Pichingroll pressing way:     oil cylinderdepress

Pinching roll transmission:   double roll driving by AC motor

Arrangementof leveling roll:     three above twobelow

Driving way og leveling roll:       by AC motor

5.3 Electricvertical roller:

Function: Electrically align the stripand bidirection adjust, is used to regulate centerization and profile-guidestrip

Structure: composed of transmission device, vertical rolldevice and the pedestal, regualted by screw guide

5.4 Cutting&ButtweldingDevice:

Function:to cut plate end&tail, then align and buttweld them.

Structure: Composed of hydraulic shear,mobile device, machine body, frontal&back pressing plate

Trolleymoving way: oil cylinder stretching

Plate pressing way: hydraulic cylinder

Press-rolldepressing way: hydraulic cylinder

Cutting way: plasma cutting

Weldingway: semi-auto submerged-arc welding

5.5 Rotary shear:

Function: used to cut the raw edges of steel strip

Structure: consists of racks, carrying roll device andbase.

  Adjustment ofblade clearance: turbine worm adjusting

Adjustment of blade overlap:  by screw guide

5.6 Scrap edge winder:

Function: used to collect and wisp the scrap edge ofsteel strip

5.7 Edge milling machine:

 Function: usedto milling welding groove to the strip

 Structure:composed of milling head device, machi9ne body and pressing roll

 Driving ofmilling toll:                     by ACmotor

5.8 Delivery machine:

Function: to provide power that forward the strip andcontrol forming speed

Structure: composed of transmission device, hard speedreducerand racks

Delivery speed:       0.6～2.8   m/min

 Drivingway:           by hard speed reducer,ACmotor

Speed control:        AC variable frequency

5.9 Guideand pre-bending board:

   Function:Unilaterally pre-bend the strip edge before moving into forming machine andprevent from curving and humping . Roller, with the protective function, canachieve normal operation when sheet thickness changed, to ensure strip deliversmoothly.

 Structure: is composedof pre-bending device, guide board device, pedestal

5.10 Forming machine:

Function: key equipment of the pipe line, used to forcethe strip bending into tube waiting for welding

Structure: consists of the base, vertical roll,tensioner and forming roll 1^# ,2^# ,3^# andoutside control roll 4 ,5 ,6 ,7，8

Unit form:               frontal swinging, left spiral

    Adjusting way:                       threerollers bend, all outside controll rollers adjustable

Strip positioning style:     center positioning

Forming scope:              Φ600～1600     mm

Forming angle:                      45°～75°

5.11 Frontal axle:

    Function: pedestalof equipment before forming, push the bridge body swiveling by hydrauliccylinder to produce forming angle

   Structure: iscomposed of bridge body and run mechanism

5.12 Rearaxle:

   Function: pipecarrier&output device and flying saw car after forming machine, can adjustdefault of pipe during forming machine by fine-tuning angle.

Structure: include bridge body, outputcarrier roll, dimensioning device, plate turnover mechanism, roller wheeldevice, fine-tuning device and rear axle

Fine-tuning angle:               ±1°

5.13 Flyingsaw machine:

   Function: to cut theformed and welded pipe according to dimensioning length into finished pipe

   Structure: includepedestal, pneumatic system, car body, crown chakra device and walking mechanism.

   Cutting way: plasmacutting

5.14 Buriedparts:

    Guide rail tobear frontal&rear axle, covering guide rail and anchor bolt

5.15 Insidewelding device:

    To fix and adjustinside welding tool and ensure to centerize seam and weld

5.16 Outsidewelding device:

   To fix and adjustoutside welding tool and ensure to place welding rod to seam center

5.17 Hydraulicsystem:

    To controll actionof all hydraulic elements of the whole line.Hydraulic unit adopts integratedblock valve station，element of whichadopts Rexroth

5.18 Electrical control system:

Theunits adopts Mitsubishi PLC control, while main delivery machine is Japan Fujifrequency converter