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ASTM A53 Galvanized Steel Tube
ASTM A53 galvanized steel tube. Galvanized steel tube is one of our advantage products. The zinc coating thickness grade can be done as per customer's request. The maximum value can be greater than 610g/m2.
Description
Tianjin Wanlei Steel Pipe Co., Ltd. is one of the leading manufacturers and suppliers of astm a53 galvanized steel tube in China, featured by quality products and low price. If you're going to wholesale durable astm a53 galvanized steel tube made in China, welcome to get pricelist and free sample from our factory.
ASTM A53 galvanized steel tube
Specification of ASTM A53 galvanized steel tube
ASTM A53: seamless and welded black and hot-dipped galvanized steel pipe
There are 3 types in ASTM A53 standard.
Type F—Furnace-butt-welded, continuous welded Grade A
Type E—Electric-resistance-welded, Grades A and B
Type S—Seamless, Grades A and B
| Composition, % | Type S(SMLS), Type E(ERW) | Type F(furnace-welded) | |
| Grade A | Grade B | Grade A | |
| C, max | 0.25 | 0.30 | 0.30 |
Mn, max | 0.95 | 1.20 | 1.20 |
| P, max | 0.05 | ||
| S, max | 0.045 | ||
| Cu, max(1) | 0.40 | ||
| Ni, max(1) | 0.40 | ||
| Cr, max(1) | 0.40 | ||
| Mo, max(1) | 0.15 | ||
| V, max(1) | 0.08 | ||
| Tensile strength, MPa, min | 330 | 415 | 330 |
| Yield strength, MPa, min | 205 | 240 | 205 |
(1) The total composition for these five elements shall not exceed 1.00 %.
Description of ASTM A53 galvanized steel tube
Galvanized steel tube ordered under the specification shall be coated with zinc inside and outside by the hot-dip process.
The weight of zinc coating: not less than 0.55kg/m2 on average
not less than 0.49kg/m2 for either of speciments
Process of hot galvanizing of ASTM A53 galvanized steel tube
black part inspection——bridging——degrease——rinsing——pickling——cleaning——plating assistant dipping——dry by hot air——HDG——cooling——passivation & rinsing——unloading——inspection and repair——packing
Zinc coating thickness grade of ASTM A53 galvanized steel tube
| coating grade | mils | oz/ft2 | μm | g/m2 |
| 35 | 1.4 | 0.8 | 35 | 245 |
| 45 | 1.8 | 1.0 | 45 | 320 |
| 50 | 2.0 | 1.2 | 50 | 355 |
| 55 | 2.2 | 1.3 | 55 | 390 |
| 60 | 2.4 | 1.4 | 60 | 425 |
| 65 | 2.6 | 1.5 | 65 | 460 |
| 75 | 3.0 | 1.7 | 75 | 530 |
| 80 | 3.1 | 1.9 | 80 | 565 |
| 85 | 3.3 | 2.0 | 85 | 600 |
| 100 | 3.9 | 2.3 | 100 | 705 |
Remark: The value in μm are based on the coating grade. The other values are based on conversions using the following formulas: mils=μmX0.03937; oz/ft2=μmX0.02316; g/m2=μmX7.067.
Inspection of ASTM A53 galvanized steel tube
(1) Zinc thickness measurement after production
(2) Inspection by customers
Main items: visual inspection, outer diameter, wall thickness, length, quantity, zinc thickness, and others.
Shipment of ASTM A53 galvanized steel tube
Galvanized steel tubes are arranged to delivery to customers by container. All tubes are stuffed into containers by professional equipments.
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