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  • STK400 Galvanized pipe
  • STK400 Galvanized pipe
  • STK400 Galvanized pipe
  • STK400 Galvanized pipe
  • STK400 Galvanized pipe
  • STK400 Galvanized pipe
  • STK400 Galvanized pipe

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STK400 Galvanized pipe
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PRODUCT DESCRIPTION

STK400 is structural steel,standards is JIS G3444 of carbon steel tubes for general structure.

Description

Galvanized pipes have a wide range of uses. In addition to oil and other low-pressure fluid pipelines, it is also used as oil well pipes in the petroleum industry, especially in offshore oil fields, oil heaters in chemical coking equipment, coal distillation, and oil washing converter pipes, bridges, etc. Pipe pile, mining tunnel support frame with pipe, etc. Developed countries in the world started to develop new pipes and continuously banned galvanized pipes.


Product introduction：

Galvanized steel pipe is divided into cold galvanized steel pipe, hot galvanized steel pipe, cold galvanized steel pipe has been banned, the latter is also advocated by the state can be used temporarily.


Application：

Hot-dip galvanized steel pipe is widely used in construction, machinery, coal mine, chemical industry, electric power, railway vehicles, automobile industry, highway, bridge, container, sports facilities, agricultural machinery, petroleum machinery, mining machinery, greenhouse construction and other manufacturing industries.Galvanized steel pipe Welded steel pipe with hot dip plating or electrogalvanized coating. Galvanized steel pipe can increase the corrosion resistance, prolong the service life. Galvanized pipe has a wide range of uses, in addition to the pipeline pipe for water, gas, oil and other general low pressure fluid, but also used in the petroleum industry, especially the oil well pipe, oil pipeline, chemical coking equipment of the oil heater, condensate cooler, coal distillation and washing oil exchanger with the pipe, and trestle pipe pile, mine tunnel support frame with pipe.


Thickness1-200mm；or as requiredLength:2000-16000mm，or as required
Dimensions16-1020mm；(1/2inch~40inch)DimensionsTechniqueHot Rolled Or Cold Rolle
Zinc Coating pre galvanized steel pipe: 60-150g/m2
hot dipped galvanized steel pipe:200-460g/m2		Surface treatmentCold galvanizing，Hot dip galvanized
Certification:CE, ISO, SGS，BV，Mill CertificateStandard:ASTM，JIS，GB，DIN，EN
price termsFOB,CRF,CIF,EXW, CPTPayment TermsT/T, L/C at sight,West Union
GradeQ195—Grade B, SS330, SPC, S185
Q215—Grade C,CS Type B, SS330, SPHC，
Q235---Grade D, SS400, S235JR, S235JO, S235J2，
Q345---SS500, ST52，S355JR
Delivery DetailStandard has Stock;  Normal About 3-5days; Custom-made 15-20days；According to order's quantity.
Packingstandard export packing (inside:water proof paper,outside:fumigated wooden box)
Hexagon Shape Bundle, Covered With Tarpaulin, Containers Or In Bulk

Specification&Standard

hot-dip/cold galvanized steel pipe specification

regulationgridODmmWall thickness mmMinimum wallWelded pipe( 6 m fixed length)Galvanized pipe( 6 m fixed length)
Nominal inner diameterinch
Thick mmMeter weight kgRoot weight kgMeter weight kgRoot weight kg
DN151/221.32.82.451.287.681.3578.14
DN203/426.92.82.451.669.961.7610.56
DN25133.73.22.82.4114.462.55415.32
DN321.2542.43.53.063.3620.163.5621.36
DN401.548.33.53.063.8723.224.124.6
DN50260.33.83.3255.2931.745.60733.64
DN652.576.143.57.1142.667.53645.21
DN80388.94
8.3850.288.8853.28
DN1004114.34
10.8865.2811.5369.18
DN12551404.5
15.0490.2415.94298.65
DN1506168.34.5
18.18109.0819.27115.62
DN2008219.16 (welded pipe)
31.53189.18

DN2008219.16.5 hot-dip galvanizing


36.12216.72

 

GB / T 3091-2001 hot-dip galvanized pipe wall thickness deviation

eWeighChinese standardEnterprise standardContrast conclusion
Low pressure fluid conveying welded steel pipeWelded steel pipe
GB/T3091-2001Q/YF01-2002
1Steel pipe outer diameterSteel pipe outer diameter,outer diameter allowable deviationBetter than Chinese standards
Outer diameter D/mmTube outer diameter deviation mmTube outer diameterDeviation mmOuter diameter D8″± 0.60mm
D< 48.3± 0.5mm
5″-6″± 0.50mm
48.3± 1.0%
4″± 0.40mm
168.3± 0.75%+2.4 -0.83″-“± 0.30mm
D>508± 1.0%+3.0 -0.82″ or less± 0.20mm
Wall thickness deviation± 12.5%Wall thickness S1.85.75mm5%
2Usual lengthAllowable deviationlengthUsual lengthAllowable deviationBetter than Chinese standards
4M-12M+20 -02 inches or less5-0
Double length: 5-10mn ® should beleft for each double in the usual lengthMargin+20 -02.5 inches – 4 inches5-0
5 inches or more15-0
Special length20-0

 

Standard: ASTM A53, BS1387-85, GB/T3091-08, DIN2440, JIS-G3444, EN10240, EN10255

Grade: Q195, Q215, Q235, Q345, S235JR, S275JR, STK400, STK500

API SPEC 5L — Specification for Line Pipe

ASTM A53/A53M — Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless

ASTM A500 — Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes

BS 1387 — Specification for screwed and socketed steel tubes and tubulars and for plain end steel tubes suitable for welding or for screwing to BS 21 pipe threads

BS 1139 — Metal scaffolding. Specification for prefabricated mobile access and working towers

EN 39 — Loose steel tubes for tube and coupler scaffolds

EN 10255 — Non-alloy steel tubes suitable for welding and threading


Process

Welded pipe inspection - pickling - washing - coating solvent - aligning - drying - hot galvanizing - external blowing - internal blowing - water cooling - intermediate inspection - passivation - drying - typing - packaging - final inspection

镀锌管制作过程.jpg

详情.jpg


COMPANY PROFILE

Shandong GDA Import and Export Co., Ltd. is located in Liaocheng City, Shandong  Province, With convenient transportation, it is a comprehensive national high-tech  enterprise integrating production, research and development, and sales. We have the  most advanced production equipment and perfect testing equipment and means,  forming an industrial system with international economic competitiveness. The company  mainly produces carbon steel coils, carbon steel plates, steel strips, seamless steel  pipes, galvanized coils, galvanized sheets, galvanized coils, Galvalume coil, galvanized  pipes, galvanized steel strips, PPGI, PPGL, aluminum coils, aluminum sheets,  aluminum strips

CERTIFICATIONS   

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