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  • We have extended our sales net to almost all over of the wrold, such as the Southeast Asia, Australia, America, Canada, Europe, Middle East, Africa and many other countries and areas.

  • Generally the samples will be sent out immediately by the air express in 3~5 days,if the goods are in stock .Normally,delivery date will be within 20 days or according to your order.

  • Galvanized steel pipe can not be welded connections. Because the pipe can not go to secondary galvanized, there is no way to do the inside weld corrosion treatment (except to enter people). Now starting from the design, usually greater than or equal DN100 pipe with clamp connections, less than DN100 can be used to connect the wire connection. If the design is not recommended to write the changes.F...

  • This standard refers to seamless and welded black and hot dipped galvanized steel pipe. The steel categorized in this standard must be open-hearth, basic-oxygen or electric-furnace processed and must have the following chemical requirements: carbon, manganese, phosphorus, sulfur, copper, nickel, chromium, molybdenum, and vanadium. The tubing shall undergo a seamless or welding process. Tension, be...

  • Usually 30 % as deposit, 70% before shipment by T/T. Western union acceptable for small account, and L/C acceptable for large amount .

  • There is a complete set of production line for pre-galvanized square hollow section and rectangular hollow section. We use pre galvanized steel strips for raw materials, through a variety of processing technology, such as flattening, shearing and butt welding, circle shearing, loop shoring, roll forming, ctttingand so on.

  • ● Pre - galvanized pipe : pre-galvanized pipe is made of hot dipped galvanized steel strip directly ,zinc coating : 80 – 120g/m2

  • TianJin Huayuhongye Steel Co.,Ltd. ,located in Daqiuzhuang Industrial Area,Tianjin,China, is one of the most famous enterprise of steel pipe in China. Huayuhongye set up several production bases in Tianjin & Hebei Province, manufacturing ERW Steel Pipe, SSAW Steel Pipe, LSAW Steel Pipe, SMLS Steel Pipe, Scaffolding system and couplers.The main product: SSAW API 5L Line Pipe,3PE Coated API Pipe,Gas...

  • The zinc serves as a sacrificial layer. It will rust before the metal beneath it, keeping the integrity of the pipe intact for much longer than regular pipes. Furthermore, even if the zinc layer is scratched or damaged, it will still protect the metal beneath it.

  • Prices vary depending on your galvanized pipe supplier and the scope of your project. However, galvanized pipes are often more cost-effective that paint projects, particularly when you consider longevity and the need to often re-touch paint jobs.

  • Our company specializes in manufacturing of steel pipes for structures, electric power transmission project, pipeline of fluid use like water, oil and gas, piling, mechanical industry and municipal project. It has close relationships with many large steel corporations. So it supplies complete steel products according to customers’ requirements.We are one of the well recognized manufacturers and su...

  • Galvanized steel pipe is molten metal and reacting the iron matrix alloy layer, so that the substrate and coating combination of both.Galvanized steel pipe into cold galvanized steel, hot dip galvanized steel pipe, cold galvanized steel pipe has been disabled, which is also able to use a temporary state advocates. Sixties and seventies, the international developed countries began to develop new pi...

  • Hot galvanized pipe is molten metal and reacting the iron matrix alloy layer. So that the substrate and coating combination of both. Hot-dip galvanizing is the first steel pickling. In order to remove iron pipe surface. After pickled, ammonium chloride or zinc chloride aqueous solution of ammonium chloride and zinc chloride mixed aqueous solution tank or cleaning. And then into the hot dip tank. H...

  • Hot-dip galvanized (galvanizing), also known as hot-dip galvanized, it is an effective anti-corrosion of the metal, mainly used in various sectors of the metal structure facilities. The rust steel immersed in liquid zinc melt around 500 ℃, steel members attached to the surface of the zinc layer, which play the purpose of anti-corrosion. Hot-dip galvanizing process: finished of Pickling - washing -...

  • The zinc serves as a sacrificial layer. It will rust before the metal beneath it, keeping the integrity of the pipe intact for much longer than regular pipes. Furthermore, even if the zinc layer is scratched or damaged, it will still protect the metal beneath it.

  • Advantages of welded pipeWelded pipes are typically more cost effective than their seamless equivalents.Welded pipes are usually more readily available than seamless. The longer lead time required for seamless pipes can not only make timing problematic, but it also allows more time for the price of the materials to fluctuate.The wall thickness of welded pipes is generally more consistent than that...

  • API is short for the American Petroleum Institute, API certification sub-system API monogram certification and product certification.API5L authentication refers to the API monogram certification following certification:API Spec 5L line pipeAPI Spec 5LC CRA pipeline corrosion resistant alloy tubeAPI Spec 5LCP continuous pipelineAPI Spec 5LD corrosion-resistant steel alloy outer cover or liner

  • Galvanized steel pipe is better. Wear flat galvanized steel pipe plant Zhuang Teng hold off coupons platinum sly fire pipeline is used more widely. Coated steel pipe galvanized steel pipe is a new fire after. Now the national standard GB / T5135.20-2010 sprinkler systems Part 20: coated steel pipe. Also made clear that the fire should be used in coated steel. National standards set forth in the fi...

  • The thicker your zinc coating, the longer your pipe will last. The environment also plays a role in determining your pipe’s life span. If your pipes will be placed in highly corrosive conditions, they’ll often last 50 to 100 years.

  • Pregalvanized steel is zinc coated by a hot dip process. Steel strip from a coil is fed through a continuous zinc coater which cleans, fluxes and coats the steel with molten zinc. After cooling, the steel is recoiled. The pregalvanized zinc coating conforms to a G-90 thickness designation per ASTM A653.

  • Of course, we accept trade assurance.

  • Sample free, but the buyer pays for the freight.

  • For big order, 30-90 days L/C can be acceptable.

  • Of course. We can ship the cargo for u with LCL serivece.(Less container load)

  • In produce: hot dip galvanized steel pipe is made from black steel pipe and then do zinc coating. pre galvanized steel pipe made from pre galvanized steel strip.In zinc weight: hot dip galvanized 200-300g/m2 pre galvanized 30-150g/m2

  • HYHY STEEL, depending on location, holds a Certification to either ISO 9001:2008 or ISO 9001:2008. The scope of our certification pertains to the “Stockholding, Distribution, Inventory Management and Processing of Metal Mill Products.”

  • Tianjin Huayuhongye Steel Co.,Ltd. specializes in Customized Supply Chain solutions. Contact our sales to learn more.

  • We, are manufacturing and trade combo, produce and export steel pipe with Cheap price several years.Tianjin Yulongfa Agricultural Facilities Co., Ltd do domestic market and Tianjin Huayuhongye Steel co.,Ltd is the subordinate company of Tianjin Yulongfa Agricultural Facilities Co., Ltd for export business.

  • Tianjin Huayuhongye Steel Co.,Ltd. has the capability of cutting several sizes and grades of material to customer supplied lengths. Please check with our sales contact for more information.

  • Our wide range of Pre-Galvanized pipes, Square and Rectangular Hollow Section are available in variety of dimensions and thickness can also be customized as per client's requirement.Road BarriersGreen HousesSports FacilitiesParking LotsIndustrial GatesCarports

  • MMQ/ MOQ are Mill Minimum Quantity or Min Order Qty. This is the minimum order that you can buy from the mill for a non-standard item. Usually referred to as min/increments.

  • As with any business decision, planning is essential. Measure twice, cut once. During my three decades in the greenhouse industry I have helped countless growers design and build greenhouses for efficient and profitable growing. One thing you learn very early in the greenhouse business is that no two operations are the same. The greenhouse environment needs to be tailored to the plants’ ideal envi...

  • There is no such thing as cold galvanizing. The term is often used in reference to painting with zinc-rich paint. Galvanizing by definition means a metallurgical reaction between zinc and iron to create a bond between the zinc and the steel of approximately 3600 psi. There is no such reaction when zinc-rich paints are applied and the bond strength is only several hundred psi.

  • No, the steel chemistry and surface condition are the primary determinants of zinc coating thickness. Leaving the steel in the molten zinc a little longer than optimal may have one of two effects: 1) it may increase the coating thickness, but only marginally; 2) it may significantly increase the coating thickness and cause a brittle coating.

  • Constant exposure to temperatures below 390 F (200 C) is a perfectly acceptable environment for hot-dip galvanized steel. Good performance can also be obtained when hot-dip galvanized steel is exposed to temperatures above 390 F (200 C) on an intermittent basis.

  • In order for zinc to develop its protective patina of zinc carbonate that is very stable and non-reactive, it requires a wetting and drying cycle like that produced by nature. Salt spray tests keep the zinc wet and essentially wash the zinc corrosion products off as they develop, inflating the corrosion rate of zinc. This lab test is not reflective of real-world performance of zinc coatings.

  • G90 is a grade of galvanized sheet produced to ASTM A653. It has 0.90 oz/sq. ft. of zinc overall or 0.45 oz/sq. ft. per side. A60 is also a grade, has 0.30 oz/sq. ft. per side, and has been annealed after galvanizing to produce a surface that promotes good adhesion of paint.

  • The process steps are similar but the production equipment is very different. After fabrication galvanizing is a more manual process where structural steel (fabricated plate, wide-flange beams, angles, channels, tube, pipe, fasteners) is suspended by wire, chain or hook from crane hoists and immersed in the cleaning solutions and zinc. Continuous sheet galvanizing involves uncoiling sheet, passing...

  • Zinc is a noble metal and will sacrifice itself (i.e. corrode, give up its electrons and create a bi-metallic couple) to protect most metals. So, it is recommended to insulate galvanized steel so that it doesn’t come in direct contact with dissimilar metals. Rubber or plastic, both non-conductive, are often used to provide this insulation.

  • There are no known studies to suggest zinc corrosion products cause any harm to the environment. Zinc is a naturally occurring element (25th most abundant element in the earth), and necessary for all organisms to live. It is a recommended part of our diet (RDA 15 mg) and necessary for reproduction. It is used in baby ointments, vitamins, surgical instruments, sunscreens and cold lozenges.