STK500 S355JR Galvanized Round Pipe
STK500 S355JR Galvanized Round Pipe
Galvanized pipes are 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.
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PRODUCT DESCRIPTION
The outer and inner surfaces of the pipe must be smooth and free from cracks, fissures, material coverage, and non-metallic inclusions. Small scratches, bumps, dents, a thin layer of welding slag or traces are allowed after removing defects produced during production, and avoid wall thicknesses below the allowable minimum. The weld must be dense and continuous, without cracks or other defects that reduce the tensile strength of the weld under the tensile strength of the base metal. The outer boss of the weld is removed. Seams are allowed to be thickened within the permitted diameter limits. The burr inside the weld has not been removed. The edge of the metal strip in the weld is not allowed to have unevenness. The end of the pipe must be cut perpendicular to its axis. Burrs on the pipe ends due to cutting technology processes are allowed. Deformation of the pipe ends is not allowed.
Galvanized pipe must have an adherent, continuous layer of zinc on the inner and outer surfaces. Zinc coverage of both surfaces or only the inner surface is achieved by immersion in a bath of molten zinc. Local roughening and thickening of the zinc layer is allowed, mainly in the section 80 mm from the end of the pipe, where blowing of the pipe is performed. The thickness of the zinc layer on the outer surface must be thinner than that on the inner surface. The inner surface must be approximately 56 µm thick. The linear mass of a galvanized pipe is calculated by adding the mass corresponding to the minimum thickness of the zinc layer to the mass of the pipe.
| Product Name | Galvanized steel pipe | |||
| Out Diameter | Pre galvanized:1/2”-4”(21.3-406mm). Such as 38.1mm, 42.3mm, 48.3mm, 48.6mm or as customer request. | |||
| Hot dipped galvanized:1/2”-24”(21.3mm-600mm).Such as 21.3mm, 33.4mm, 42.3mm, 48.3mm, 114.3mm or as customer request. | ||||
| Thickness | Pre galvanized:0.6-2.5mm. | |||
| Hot dipped galvanized: 0.8- 25mm. | ||||
| Type | Electronic Resistance Welded (ERW) | |||
| Steel Grade | Q235, Q345, S235JR, S275JR, STK400, STK500, S355JR, GR.B-D | |||
| Standard | BS1139-1775, EN1039, EN10219, JIS G3444:2004, GB/T3091-2001, BS1387-1985, DIN EN10025, ASTM A53 SCH40/80/STD, BS-EN10255-2004 | |||
| Surface Finish | Pre-galvanized, Hot dipped galvanized, Electro galvanized, Black, Painted, Threaded, Engraved, Socket. | |||
| International Standard | ISO 9000-2001, CE CERTIFICATE, BV CERTIFICATE | |||
| Packing | 1.Big OD:in bulk 2.Small OD:packed by steel strips 3.woven cloth with 7 slats 4.according to the requirements of customers | |||
Galvanized steel pipe production technical requirements
1. Grade and chemical composition
The grade and chemical composition of steel for galvanized steel pipes shall comply with the grade and chemical composition of steel for clarinet pipes specified in GB/T3091.
2. Manufacturing method
The manufacturing method of the clarinet (furnace welding or electric welding) is selected by the manufacturer. Galvanizing adopts hot-dip galvanizing method.
3. Thread and pipe joint
(a) For galvanized steel pipes delivered with threads, the threads shall be machined after galvanizing. Thread should comply with the provisions of YB 822.
(b) Steel pipe joints shall comply with the provisions of YB 238; malleable iron pipe joints shall comply with the provisions of YB 230.
Packing and shipping
The company has domestic first-class professional technical consultants and a team of outstanding employees with professional skills. The main products are carbon steel/galvanized steel. Stainless steel/steel coil steel bars, galvalume, color-coated coils, profiles, steel bars, aluminum products, roof panels. Products are sold to more than 60 countries and regions in Europe, the Middle East, Southeast Asia, and Australia.
FACTORY APPEARANCE
Company As 20000 Square Meters Of Indoor Storage more Than 20,000 Tons Of Inventory, Spot Product Standard Involves European Standard American Standard British Standard Australian Standard German Standard, Now According To Customer Requirements For Product Opening Strip.Cutting.Processing.Annual sales of more than 60 milliontons.Our company owns the firs class professional technique adviser in China and the excellent staffs with professional technology.The main products are carbon steel / galvanized.
PRODUCT DESCRIPTION
We promise”complete specifications, prompt delivery, high quality, competitive price, “The unwavering supports you provide, along with the increasing requirements you put contributes to more varied high-quality products with more competitive prices we offer.Win-win situations are always our pursuit.
OUR ADVANTAGE
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