Factory directly Black Phosphating Seamless High Precision Steel Tube - Solar Mounting Galvanized Square Steel Pipe – Youfa Detail:
| Product | Galvanized Square and Rectangular Steel Pipe with Holes |
| 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, EN10219
GB/T 6728 JIS 3444 /3466 ASTM A53, A500, A36 |
| Surface | Zinc coating 200-500g/m2 (30-70um) |
| Ends | Plain ends |
| Specification | OD: 20*20-500*500mm ; 20*40-300*500mm Thickness: 1.0-30.0mm Length: 2-12m |



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
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.
Product detail pictures:

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Our team through qualified training. Skilled professional knowledge, powerful sense of support, to satisfy the support desires of consumers for Factory directly Black Phosphating Seamless High Precision Steel Tube - Solar Mounting Galvanized Square Steel Pipe – Youfa, The product will supply to all over the world, such as: Philippines, Seattle, Kuwait, If you give us a list of merchandise you are interested in, along with makes and models, we can send you quotations. Remember to email us directly. Our goal is to establish long-term and mutually profitable business relationships with domestic and overseas clients. We look forward to receiving your reply soon.
The factory technical staff gave us a lot of good advice in the cooperation process, this is very good, we are very grateful.






