Reliable Supplier Spiral Welded Seam Steel Pipe Mill - Large Diameter Square and Rectangular Steel Pipe – Youfa

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Our company aims to operating faithfully, serving to all of our customers , and working in new technology and new machine constantly for Steel Square Pipe, Carbon Spiral Steel Pipe, Highway Bridge Construction Post Tensioning Materials, We have now ISO 9001 Certification and qualified this item .in excess of 16 years experiences in manufacturing and designing, so our items featured with best quality and competitive selling price. Welcome cooperation with us!
Reliable Supplier Spiral Welded Seam Steel Pipe Mill - Large Diameter Square and Rectangular Steel Pipe – Youfa Detail:

Product Square and Rectangular Steel Pipe
Material Carbon Steel
Grade Q195 = S195 / A53 Grade A
Q235 = S235 / A53 Grade B / A500 Grade A / STK400 / SS400 / ST42.2
Q345 = S355JR / A500 Grade B Grade C
Standard DIN 2440, ISO 65, EN10219GB/T 6728JIS 3444 /3466ASTM A53, A500, A36
Specification Square Hollow: 20*20-500*500mm

Rectangular Hollow: 20*40-300*500mm

Thickness: 1.0-30.0mm

Length: 2-12m

Surface Bare/Natural Black

Painted or Oiled with or without wrapped

Ends Plain ends

square big pipe square steel pipe big size square big size pipe

Strict Quality Control:
1) During and after production, 4 QC staffs with more than 5 years experience inspect products in random.
2) National accredited laboratory with CNAS certificates
3) Acceptable inspection from third party appointed/paid by buyer, such as SGS, BV.
4) Approved by Malaysia, Indonesia, Singapore, Philippines, Australia, Peru and UK. We own UL /FM, ISO9001/18001, FPC certificates


learn more about certificates

quality control

Packing and Delivery:
Packing Details : in hexagonal seaworthy bundles packed by steel strips, With two nylon slings for each bundles.
Delivery Details : Depending on the QTY, normally one month.


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Reliable Supplier Spiral Welded Seam Steel Pipe Mill - Large Diameter Square and Rectangular Steel Pipe – Youfa detail pictures


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All we do is usually connected with our tenet " Customer to start with, Rely on initial, devoting on the food packaging and environmental protection for Reliable Supplier Spiral Welded Seam Steel Pipe Mill - Large Diameter Square and Rectangular Steel Pipe – Youfa, The product will supply to all over the world, such as: Estonia, Florence, Madras, With all these supports, we can serve every customer with quality product and timely shipping with highly responsibility. Being a young growing company, we might not the best, but we are trying our best to be your good partner.
  • Reasonable price, good attitude of consultation, finally we achieve a win-win situation,a happy cooperation!
    5 Stars By Ivy from Venezuela - 2016.06.25 12:48
    The product manager is a very hot and professional person, we have a pleasant conversation, and finally we reached a consensus agreement.
    5 Stars By Sally from Oslo - 2015.06.28 19:27