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Shanqi
Product Description
Hot-dip galvanized and cold-galvanized appearance
The appearance of cold galvanizing is smoother and brighter, and the color passivation process coating is yellow-green and colorful. The coating is blue-white or white, the white passivation treatment is green, and the passivation treatment of the white coating is significantly colorful with the sun angle. The angular parts of complex workpieces are prone to "electric burning" and consist of dark, zinc-thick parts. It is easy to form a current dead dark current gray area at the inner corner, and the zinc layer in this area is relatively thin. The overall zinc nodule and agglomeration of the workpiece.
| Standard | GB 5310-1995, JIS G3463-2006, ASTM A106-2006, DIN 1626, API 5CT, BS 1387 |
| Grade | ST37, 15crmo, API J55, STPG42, A53(A,B), 15NiCuMoNb5, Cr17Ni8, STB35, STPA25 |
| Thickness | 3mm - 50mm |
| Section Shape | Square/The needs of customers |
| Place of Origin | China |
| Application | Structure Pipe |
| Technique | Hot Rolled |
| Certification | API |
| Surface Treatment | galvanized |
| Special Pipe | Thick Wall Pipe |
| Alloy Or Not | Is Alloy |
| Tolerance | ±1% |
| Type | Square Tubesc |
| Processing Service | Bending, Welding, Decoiling, Punching, Cutting |
| Product name | Square Steel Tube |
| Keyword | Seamless Square Pipes |
| MOQ | 3 Ton |
| Material | Q195/Q215/Q235/Q345/10#/20# |
| Usage | Construction Structure, etc. |
| Shape | Round.Square. Rectangular |
Application of galvanized steel pipe
Galvanized pipes are widely used. In addition to being used as pipeline pipes for general low-pressure fluids such as water, gas, and oil, they are also used as oil well pipes and oil pipelines in the petroleum industry, especially offshore oil fields, and oil heaters and condensation pipes for chemical coking equipment. Pipes for coolers, coal distillation washing oil exchangers, trestle piles, and support pipes for mine tunnels, etc. Widely used in construction, machinery, coal mines, chemicals, electric power, railway vehicles, automobile industry, highways, bridges, containers, sports facilities, agricultural machinery, petroleum machinery, prospecting machinery, greenhouse construction and other manufacturing industries.
Hot dip galvanized looks a bit rougher and silvery white than electrogalvanized, and looks prone to process water lines and a few drops of tumor, especially on one end of the workpiece. The hot-dip galvanized zinc layer is several times thicker than electro-galvanized, and its corrosion resistance is several times that of electro-galvanized.
FAQ：
Q: What products does your company have?
A: Our company produces all kinds of galvanized sheets, coils, tubes, steel strips, galvanized sheets, coils, steel strips, PPGI/PPGL, roof panels, etc. Production experience, support customization.
Q: What are the advantages of your company?
A: (1): Prime quality and Competitive price.
(2): Excellent experiences with after-sale service.
(3): Every process will be checked by responsible QC which insures every product's quality.
(4): Professional packing teams which keep every packing safely.
(5): Samples can be provided as your requirements.
Q: What is your terms of payment ?
A: Can be negotiated by both parties. If you have another question, pls feel free to contact us as below.
Q: What about your price?
A: Our price is very competitive.
Pls feel free to contact us if you are interested in our products.
Q: How long is your delivery time?
A: Stock steel/Steel for simple cutting/Small amount of general standard steel: about 5-20 days for delivery; Custom steel/bulk steel: about 15-30 days for delivery. Contact us for specific delivery times.
