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Basic Info.
Product Description
Prime Quality ASTM A653 Pre Galvanized Square Hollow Section Steel Tube and GI Rectangular Pipe
Hot-dip galvanizing has the advantages of uniform coating, strong adhesion and long service life. The hot-dip galvanized steel pipe base and hot-dip galvanized steel pipe undergo complex physical and chemical anti-galvanizing to form a zinc-iron alloy layer with a tight corrosion-resistant structure.
The hot-dip galvanized pipe is to make the molten metal and the iron matrix react to produce an alloy layer, so that the matrix and the coating are combined. Hot-dip galvanizing is to pickle the steel pipe first. In order to remove the iron oxide on the surface of the steel pipe, after the pickling, it is cleaned in a tank of ammonium chloride or zinc chloride aqueous solution or a mixed aqueous solution of ammonium chloride and zinc chloride, and then sent to In the hot dip plating tank.
ASTM A653 Classification
- The material is available in several designations as follows:
- Commercial Steel (CS Types A, B, and C),
- Forming Steel (FS Types A and B),
- Deep drawing steel (DDS),
- Extra deep drawing steel (EDDS),
- Structural steel (SS),
- High strength low alloy steel (HSLAS Type A), and
- High strength low alloy steel (HSLAS Type B).
CHEMICAL COMPOSITION
| CLASSIFICATION | TYPE | Chemical Composition ( values are in % ) Max. | ||||||||||||
| C | Mn | P | S | Al | Cu | Ni | Cr | Mo | V | Cb | Ti | N | ||
| ASTM A653 | CS type A | 0.10 | 0.60 | 0.030 | 0.035 | - | 0.20 | 0.20 | 0.15 | 0.06 | 0.008 | 0.008 | 0.025 | - |
| CS type B | 0.02 -0.15 | 0.60 | 0.030 | 0.035 | - | 0.20 | 0.20 | 0.15 | 0.06 | 0.008 | 0.008 | 0.025 | - | |
| CS type C | 0.08 | 0.60 | 0.100 | 0.035 | - | 0.20 | 0.20 | 0.15 | 0.06 | 0.008 | 0.008 | 0.025 | - | |
| FS type A | 0.10 | 0.50 | 0.020 | 0.035 | - | 0.20 | 0.20 | 0.15 | 0.06 | 0.008 | 0.008 | 0.025 | - | |
| FS type B | 0.02-0.10 | 0.50 | 0.020 | 0.030 | - | 0.20 | 0.20 | 0.15 | 0.06 | 0.008 | 0.008 | 0.025 | - | |
| DDS | 0.06 | 0.50 | 0.020 | 0.025 | 0.01 | 0.20 | 0.20 | 0.15 | 0.06 | 0.008 | 0.008 | 0.025 | - | |
| EDDS | 0.02 | 0.40 | 0.020 | 0.020 | 0.01 | 0.20 | 0.20 | 0.15 | 0.06 | 0.10 | 0.10 | 0.15 | - | |
TYPICAL RANGES OF MECHANICAL PROPERTIES
| CLASSIFICATION | TYPE | YIELD STRENGTH (Mpa) Min. | TENSILE STRENGTH (Mpa) Min. | ELONGATION in 50mm Min.(%) |
| ASTM A653 | CS type A | 170/380 | - | ≥ 20 |
| CS type B | 205/380 | - | ≥ 20 | |
| CS type C | 170/410 | - | ≥ 15 | |
| FS type A | 170/310 | - | ≥ 26 | |
| FS type B | 170/310 | - | ≥ 26 | |
| DDS | 140/240 | - | ≥ 32 | |
| EDDS | 105/170 | - | ≥ 40 |
Q: Are you trading company or manufacturer ?
A: We are professional manufacturer for steel pipe, and our company also is a very professional a trade company for steel
products.we can also provide a wide range of steel products.
Q: Will you delivery the goods on time?
A: Yes,we promise to provide best quality products and delivery on time .Honesty is our company's tenet.
Q: Do you provide samples ? is it free or extra ?
A: The sample could can provide for customer with free,but the courier freight will be covered by customer account.
Q: Do you accept the third party inspection?
A: Yes absolutely we accept.
Q: How could you guarantee your products?
A: Each piece of products is manufactured by certified workshops, inspected by Linxu piece by piece according to national QA/QC standard. We also could issue the warranty to customer to guarantee the quality.
Q: How can I get your quotation as soon as possible?
A: The email and fax will be checked within 24 hours,meanwhile,the Skype,Wechat and WhatsApp will be online in 24 hours.Please send us your requirement and order information,specification(Steel grade,size,quantity,destination port),we will work out a best price soon.