河北长丰钢管制造集团有限公司HEBEI CHANGFENG STEEL TUBE MANUFACTURING GROUP CO.LTD

HEBEI CHANGFENG STEEL TUBE MANUFACTURING GROUP CO.,LTD

ADD:NO.5 Beihai Road,Economic And Technical Development Zone,cangzhou,Hebei,China.TEL:0086-317-3092830 CELL:0086-15231712244/13754534514FAX:0086-317-3096617 Skype: steelpipeman9527 Web:www.changfengsteeltube.comEmail:tomlv@changfengsteeltube.com grb.tomlv@gmail.com

ELECTRICAL RESISTANCE WELDED STEEL PIPEELECTRICAL RESISTANCE WELDED STEEL PIPE

Introduction

PRODUCTION RANGDE

Specification

Length

Out Diameter

Wall Thickness

Steel Grade

StandardAPI 5L PSL1&PSL2 ASTM A53 JIS G 3466

GB/T9711-2011 GB/T3091-2008 ISO3183

AS1163 EN10219/10217 BS ASTM ASME

Q235 Q345 L245-L415 GR.B X42-X65 C250/C350 S235/S275/S355

ERW steel pipe is formed hot-rolled steel coil produced in steel mill.All the material coils are verified based on the test certificate received from steel mill for their chemistry and mechanical properties.

The forming stage of ERW pipe begins with a single-width strip.The width of strip is roughly equal to the perimeter of the pipe to be produced.The edges of coil are sheared to pre-specified width in slitting line.

The process involves uncoiling & leveling of coils and processing the same.The lead end of each coil is squared by shearing operation for threading in to the mill.Then this end is joined with coil of outgoing coil to maintain continuity in production and reduce losses.

To maintain continuity of production,ti is accumulated in an accumulator/loop pit.It is then gradually and continuously formed into a circular shape by shaped rolls as per the required diameter in forming units.In the welder,edges of fromed strip are pre heated by High Frequency Electrial Induction heating process to certain desired temperature,which are mechanically pressed together horizontally to form continuous weld seam.This welding process does not need any filler metal.Instead,the welding pressure causes some of the metal to be squeezed from the joint,forming a bead of metal on inside and outside of the tube.This bead or welding flash is trimmed during the process.The weld seam is examined and adjusted as per the weld para,eters,including temperature and outside diameters.

LINE PIPE

Specification(ANSI)

Y i e l d

Structure Tube

Tensile

QUALITY CERTIFICATE

Hebei changfeng Steel Tube Manufacturing Group Co.,Ltd

Officail API MONOGRAM(API)

Quanlity Management System(ISO 9001)

Det norske veritas(DNV)

Bureav Veritas(BV)

Societe Generale de Surveillance S.A.(SGS)

Certificate Of Quanlity(CIQ)

C V

Equipment & Inspection

Mill & Production Line

High-frequency longitudinally welded pipe production line is mainly used for the production of welded steel pipe of φ8-φ660 mm and wall thickness of 0.5mm-20mm as well as square,regular,carbon steel pipe,ERW steel Tube.

Uncoiling Machine

Plate shear Machine

A horizonal strip accumulator for metal trip includes a looper car which is moveable along a travel path at least one swivel gate which is moveable,when the looper car is moved,by the looper car between a starting position and an end position.For moving the swivel gate,the looper car acts on an actuating element which is connected with the swivel gate through a four -gear mechanism with two swivels.

Looper Accumulator

Forming Unites ( Roll Machine)

High-frequency Induction Welder

Sizing,Straightening UnitesEquipment for steel tube diameter,straightness of finishing.

CNC screw milling flying sawDevice for continuous automatic tracking the cutting precisionSpecified Length: 3 m - 18 mScale accuracy: 0 - 6 mm

NDT Machine(UT)

To weld in the longitudinal，lateral and oblique defects and weld on both sides of the 25mm range heat affected zone of defect detection.Inspection: 10-15 m/minChannel:channel 24Inspection Standards: ISO 10893 ; ASTM A435; A578; ASTM E273; E164;E587;E570;E213.

Inspection

Hebei Changfeng Steel Tube Manufacturing Group Co.,Ltd have ability to provide testing services for the producing process and finished products under the mill testing room,Such as Hydraulic test,Flating test,NDT test and so on.Sampling standards: ISO 14284 ; ASTM A370;ASTM E1806

Chemical AnalysisMain purpose of chemical analysis to determine whether the batch product according to the grade of steel products.and to the analysis of the standards.Chemical composition analysis instrument is mainly used direct reading spectrometer,carbon sulfur analyzer to finish a lot of online product production tasks.

Hardness Test

Methods measure steel hardness with brinell,rockwell and vickers hardness index.The index is to determine the applicability of steel pipe or a peccific purpose by hardening or softening effect.

Hydraulic Tester

(refer to ASTM A370 ;ASTM A956; A1038 ;E110)

Checking the quality of pipe connection leak test,check the vacuum pipe system maintain the performance of the vacuum test and based on the fire safety considerations for the leakage test,etc.

Metallurgical Micriscope

Sample location:pipe body 90° to seam;welding joint.

Test metal organization,such as rolling,forging and heat treatment processing changes in microstructure.

Charpy V-notch Impact Test

Impact Test Machine provide low temperature for sample( pipe body,seam,heat infection) to measure the V-notched charpy impact.

Bending MachineThe sample is placed on the platform and then add a certain load,test fixture swinging,examine the break rate after a certain number of times.

ERW Steel Pipe

ERW steel pipe is flatten then place it into roller to form a tube and passes through a welding electrode made of copper disk which is connected to revolving transformer.When the electrodes contact each side,the temperature is increased to the welding point.Once the tubes leaves the electrodes,the inside flash is removed by after colling the tube with a harmmer and the outer flash by a cutting tool.The surface finish could be either bare or coated.ERW steel pipe is used fencing,line pipes,oil country tubular,scaffolding,water and fas conveyance,structural,engineering purpose.There has been a tremendous increase in the production of ERW steel tubes due to growing demand in oil&gas industry,infrastructure and automobile usages.

Main Projects list Item Country Standard&Grade Specification Quantity

1 Spain API 5L,X52 273,355*7.9mm 400MT

2 Saudi Arabia

API 5L.GR.B 219*12.7MM 12000METERS

6 Sigarpore API 5L,GR.B 377*12mm 200MT

7 Iran API 5L,GRB 508*9.52mm 704MT

8 Thailand API 5L,GRB 168*7.01mm 1067Meter

9 Saudi Arabia

API 5L,X52 114,219*5mm 3500METRES

10 Australia API 5L,X52/C350 355.6，406.4*12.7mm 460MT

11 Cananda API 5L,GR.B 457*7.92mm 1980Meter

12 Mexicao API5L,GR.B 508,610*9.52mm

840MT

5 AustraliaAPI

5L,GR.B/C250 609.6*12.7mm 606MT

4 Bangladesh

API 5L,X42 323.9*6.35mm(3PE) 1120MT

3 Italy ASTM A53B 406.4*9.53mm 770MT

COMMODITY:ERW STEEL PIPE