Hot Dip Galvanized Steel Pipe
Galvanized Steel pipe is a welded Steel pipe with a hot-dip or electro-galvanized layer on the surface. Galvanizing can expand the corrosion resistance of Steel pipes and lengthen their carrier life. Galvanized pipes are extensively used. In addition to being used as pipeline pipes for widespread low-pressure fluids such as water, gas, and oil, they are additionally used as oil nicely pipes and oil pipelines in the petroleum industry, particularly offshore oil fields, and oil heaters and condensation pipes for chemical coking equipment. Pipes for coolers, coal distillation washing oil exchangers, trestle piles, and guide pipes for mine tunnels, etc.
Classification of galvanized Steel pipe:
Galvanized Steel pipes are divided into bloodless galvanized Steel pipes and hot-dip galvanized Steel pipes.The hot-dip galvanized pipe reacts the molten metallic with the iron substrate to produce an alloy layer, so that the substrate and the coating are combined. Hot-dip galvanizing is to pickle the Steel pipe first. In order to dispose of the iron oxide on the floor of the Steel pipe, after pickling, it is cleaned by means of ammonium chloride or zinc chloride aqueous answer or a combined aqueous answer of ammonium chloride and zinc chloride, and then despatched to hot-dip coating tank.
Hot-dip galvanizing has the benefits of uniform coating, robust adhesion and lengthy provider life. The hot-dip galvanized Steel pipe substrate undergoes complicated bodily and chemical reactions with the molten plating answer to structure a corrosion-resistant zinc-iron alloy layer with a tight structure. The alloy layer is built-in with the pure zinc layer and the Steel pipe substrate, so it has robust corrosion resistance.
Advantage of Hot Dip Galvanized Steel Pipe
1) Reasonable price with excellent quality;
2) Abundant stock and prompt delivery;
3) Rich supply and export experience, sincere service;
Product Parameters
Hot Dip Galvanized Steel Pipe | ||
Size | OD | 21.3-1219.2mm(round) |
Thickness | 0.55-30mm | |
Length | 1-12m or as per customer's requirement | |
Surface | Hot dipped galvanized, 210g-600g/m2 | |
Standard | GB/T13793-1992,GB/T14291-2006, GB/T3091-1993,GB/T3092-1993,GB3640-88 BS1387/1985,ASTM A53/A36,EN39/EN10219,API 5L,GB/T9711.1-99 etc | |
Material | Q195-Grade B, SS330, SPC, S185 Q215-Grade C,CS Type B, SS330, SPHC Q235---Grade D, SS400, S235JR, S235JO, S235J2 Q345---SS500,ST52 | |
Ends | Plain ends, threaded and screwed ends | |
Application | Widely used in structure, accessorize,construction, machinery parts,fluid transportation,the stress parts of the automobile tractor parts and so on. | |
Package | 1) Big OD: in bulk; 2) Small OD: packed by steel strips; 3) Plastic bags; 4) According to customer's requirement. | |
Delivery time | within 20 days after getting the deposit | |
Payment term | TT, DP, LC | |
Cold-dip galvanized pipe is electro-galvanized, the quantity of galvanizing is very small, and its corrosion resistance is lots worse than that of hot-dip galvanized pipe. The galvanized layer of cold-dip galvanized Steel pipe is an electroplated layer, and the zinc layer is independently layered with the Steel pipe substrate. Zinc is exceptionally thin, and the zinc layer is without problems connected to the Steel pipe substrate and is effortless to fall off.
Therefore, its corrosion resistance is poor. In newly constructed houses, it is forbidden to use cold-galvanized Steel pipes as water grant pipes.
weight factor
The mechanical homes of Steel are necessary symptoms to make certain the end-use performance (mechanical properties) of steel, which relies upon on the chemical composition and warmth remedy device of steel. In Steel pipe standards, tensile residences (tensile strength, yield power or yield point, elongation), hardness, toughness, and excessive and low temperature residences required through customers are special in accordance to specific use requirements.Classification of galvanized Steel pipe:
