博文

目前显示的是 七月, 2022的博文

Specification and Application of Scaffolding

 Scaffolding is widely used on not only in building construction, but also widely used on our daily life. When workers need to maintain high building or high sculpture, scaffolding is the most widely used tools for them. Most common seen technical data for scaffolding: Outer Diameter: 27mm, 38mm, 42mm, 48.3mm-48.6mm, 50.8mm, 60.3mm, 63.5mm, 76mm,etc... Wall Thickness: 2.0mm - 4.0mm Length: 5.8m ,6m, 6.4m,6.5m ,etc End: Square cut, Burr removed Surface: Lightly oiled, Hot dip galvanized, Electro galvanized, Black Application of scaffolding: Scaffolding is a temporary structure used to support people and material in the construction or repair of buildings and other large structures. Material Storage Racks, Pallets, Hydraulic Platforms, Trusses, Columns, Purlins, Greenhouse, Stands Towers, Agricultural Equipment Xinyue has export thousands of tons scaffolding to all around the world, especially in UK and Middle East Area, mainly are BS 1387 scaffolding tube. Feel free contact us anyti...

A guide to ASTM A179 seamless steel pipe

 Xinyue is a time-honored seamless steel manufacturer from Tianjin, China. Xinyue’s seamless steel pipe size range are: OD: 10.3mm to 914.4mm. WT: 1.73mm to 40mm. Most often seen length requirement are: random length, fixed length, SRL, DRL, etc. ASTM A179 is a Standard Specification for Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes. This specification covers minimum-wall thickness, seamless cold-drawn low-carbon steel tubes for tubular heat exchangers, condensers, and similar heat transfer apparatus. Tubes shall be made by the seamless process and shall be cold drawn. Heat and product analysis shall be performed wherein steel materials shall conform to required chemical compositions of carbon, manganese, phosphorus, and sulfur. The steel materials shall also undergo hardness test, flattening test, flaring test, flange test, and hydrostatic test. Below picture is the cargo from Tianjin Xinyue Steel Group. ASTM A179 Seamless teel pipe in bundle and ready fo...

The Difference between Hot Rolled and Cold Rolled Square Steel Pipe

 Hot rolled carbon square tube and cold formed steel hollow section square pipe is a process, they have a great impact on the microstructure and properties of steel, rolled steel, hot-rolled mainly based, only for the production of cold-rolled trumpet steel and sheet. Hot-rolled Pros: You can destroy ingot casting organizations, grain refinement of steel and eliminate defects microstructure, so that the steel dense tissue mechanical properties are improved. This improvement is mainly reflected in the direction along the rolling direction to a certain extent in the steel is no longer isotropic; pouring formed bubbles, cracks and loose, can be welded at a high temperature and pressure. Disadvantages: After hot rolling, the hot rolled square hollow section steel pipe inside the non-metallic inclusions (mainly sulphide and oxide, and silicates) is pressed into the sheet, delamination (interlayer) phenomenon. Layered in the thickness direction of the steel tension performance deteriorat...

Difference between seam pipe and seamless pipe

 There are many kinds of steel pipes on the market, such as: seam pipes, seamless pipes, etc., but many people do not know the difference, so what is the difference between seamed steel pipes and seamless steel pipes? The seam pipe is also called welded steel pipe, which is nominally named in nominal size. Its commonly used nominal size is DN15~100, and its largest nominal diameter is DN150 (6). Welded steel pipes are also called water and gas pipes because they are often used for the transportation of hot and cold water and gas. Galvanized welded steel pipes are habitually called white iron pipes on construction sites, while non-galvanized welded steel pipes are called black iron pipes. The blanks used for welded steel pipes are steel sheets or strips. The seamless steel pipe is made of perforated whole round steel, and the steel pipe without weld seam on the surface is called seamless steel pipe. According to the production method, seamless steel pipes can be divided into hot-rol...

Difference between galvanized seamless steel pipe and galvanized steel pipe

 1) Can seamless steel tube be galvanized? Seamless steel tube refers to a steel pipe that is perforated from a whole round steel and has no welds on the surface. It is widely used. Ordinary galvanized pipes are generally made of welded pipes. Can seamless steel tubes be galvanized? The answer is To be sure, galvanizing treatment is to coat the surface of the steel pipe with a layer of zinc, so that the steel pipe is protected by the zinc layer, so that it is not easy to rust, and the seamless steel tube also belongs to the steel pipe.It is also possible to use galvanized steel, and the performance of galvanized seamless steel tube is better than that of ordinary steel pipe. 2) What is the difference between galvanized seamless steel tube and galvanized tube? Galvanized steel tubes can be called galvanized pipes. The main differences between galvanized seamless steel pipes and galvanized steel pipes are: 1. Different uses Galvanized seamless steel tubes are mainly used for general ...

What are the important factors driving the growth of steel pipe

 Estate has boomed for several consecutive years nowadays. With its blossom, lots of industries have entered good momentum in selling. Steel pipe wholesale, from seamless steel pipe, to ERW steel pipe and so on, has thrived nowadays. The main factor driving the steel pipe’s market growth is the market requirement. No matter you are in road engineering project, deep sea project, water supply project, or oil and gas transmission. We cannot ignore the role of steel pipe in these projects. Under this situation, steel pipe plays an important role in our daily life. What’s more, high quality and practical usage would boost the huge market of steel pipes. With different standards, we can apply them in various areas which makes them a huge range of use. http://www.tjxysteel.com/news/important-factors-driving-the-growth-of-steel-pipe-260.html

A brief introduction to Y Strainer

 Size: DN50~DN600, 1/2"-24" working pressure: PN10,PN16 Material: The body material: Ductile iron, Cast iron, Carbon steel The Screens: SS304,SS316. Gasket at the bonnet: Rubber or graphite Applicable medium: Water, Oil, Gas, food, chemical, corrosive medium. Standard: ANSI/BS/DIN/JIS For more info about Y Strainer, feel free contact us anytime. http://www.tjxysteel.com/news/A-brief-introduction-to-Y-Strainer-259.html

How to Paint Carbon Steel Tubes?

 Carbon steel tubes consist of an iron and carbon alloy that is able to be bent into shapes during manufacture without reducing its high tensile strength. It is important to protect the steel surface from corrosion due to the iron ferrite composition that will rust through oxidization from water contact. The pipework that supplies fire sprinkler systems is often carbon steel, and requisite strength components such as cam and crank shafts in aircraft and cars use carbon steel tubes and tubing. Painting carbon steel tubes to effectively avoid corrosion requires the use of the correct primer and paint. 1. Use wire wool and remove all surface rust from the carbon steel tube. Sweep up any rust particles using a hand brush to keep the work area clear of dust. 2. Use a solvent-based cleaner and a cloth to scrub off all grease and oil stains from the surface of the pipe. Wipe the cloth over the entire surface of the pipe to collect any dust or rust particles that remain. Allow the carbon s...

Matters needing attention when buying large diameter straight seam steel pipe

 Before purchasing large-diameter straight seam steel pipes (LSAW), you should follow the pre-designed specifications, lengths, materials, wall thicknesses, welding standards and weld requirements, which must be communicated well before purchasing. 1. The first is the specification. For example, 800mm is also called DN800, including 820mm and 813mm of A and B series, or the outer diameter of 800mm must be clearly required to avoid unnecessary losses. 2. The wall thickness of large-diameter straight seam steel pipe is required to be 16mm. It is possible that the actual thickness of the raw materials will be 15.75mm and 16.2mm, and there will be upper or lower differences. These are normal deviations. Because straight seam steel pipes are all ton prices, it is necessary to communicate in advance to avoid differences in weight. 3. The normal length of the large-diameter straight seam steel pipe is 12m. When it needs to be fixed, it needs to be communicated in advance, because the pric...

Standards and usage of carbon SMLS steel pipe

 We all know that SMLS steel pipe is widely used in our daily life, it can be used as line pipe for oil, natural gas, water and fluid transmission purpose, API 5CT Casing, API 5CT Tubing, drill pipe, boiler tube, mechanical pipe, cylinder pipe, etc. Today, we’ll talk about the most common seen standards and usage of carbon SMLS steel pipes. API 5L Gr.B: Specifiaction for line pipe. ASTM A 106 Gr. B: Seamless carbon steel pipes?for high-temperature service. ASTM A 53: Specification for black steel seamless pipes. ASTM A 161: Seamless low-carbon and carbon molybdenum steel still tubes for refinery service. ASTM A179: Specification for seamless cold-drawn low-carbon steel heat-exchanger and condenser tubes. ASTM A192: Specification for seamless carbon steel boiler tubes for high-pressure service. ASTM A 210: Specification for seamless medium-carbon steel boiler and superheater pipes. ASTM A213: Specification for seamless ferrite alloy steel boiler, superheater and heat-exchanger pipes...

What can we do when it comes to corrosion steel pipes?

 What will you react when you are paly the role of the end user, but find out that the steel pipes got corrosion after some time. When we buy steel pipes from the supplier, we expect steel pipes with good quality. Then we can put them into usage, such as transmit oil and natural gas, convey fluid liquid, etc. But if during some time’s usage, the pipes got corriosn, then what can we do when it comes to corrosion steel pipes? First, we should check why the pipes got corrosion. There are many reason that could cause corrosion to steel pipes. Pipe corrosion mainly comes from external corrosion and corrosive medium transported inside the pipe. Serious internal corrosion can happen on petroleum and sewage treatment transportation pipeline as there are lots of medium in these products. As we know why the steel pipes will get corrosion, we can know how to maintain and extend lifespan of steel pipe. Such as bare pipe is not suitable for wet condition. Different pipe coating is suitable for ...

Coated Pipeline---3PE Pipe

 When we use pipeline to transfer natural gas or oil for long distance conveyance, we always need to burry the pipeline underground. When steel pipes or pipe fittings are in contact with soil and wet condition, we must consider its external anti-corrosion ability to ensure a longer lifespan of the pipe. The 3 layers Polyethylene(3PE/3LPE) external coating perfectly solves this problem. Its first level is a high performance fusion bonded epoxy(FBE) layer, then comes an adhesive layer, and finally is an outer layer of high density polyethylene. The three layers external coating has excellent resistance to abrasion, wear, acid, alkali and cathodic disbonding, etc. 3LPE coated pipes consist of 3 layers for pipeline coating. First Layer: Fusion Bond Epoxy>100um consists of fusion bonded epoxy. This layer protection against corrosion and is fusion with the blasted steel surface. Second Layer :170~250um, is copolymer adhesive which has excellent chemical bonding to the internal layer a...

The difference between annealing and normalizing of seamless steel tube

 The main difference between annealing and normalizing: 1. The cooling rate of normalizing is slightly faster than that of annealing, and the degree of supercooling is larger 2. The structure obtained after normalizing is relatively fine, and the strength and hardness are higher than that of annealing. The choice of annealing and normalizing: 1. For low carbon seamless steel pipes with carbon content less than 0.25%, normalizing is usually used instead of annealing. Because the faster cooling rate can prevent the low carbon seamless steel pipe from precipitation of free tertiary cementite along the grain boundary, thereby improving the cold deformation performance of the stamping parts; normalizing can improve the hardness of the steel and the cutting performance of the low carbon seamless steel pipe. ; When there is no other heat treatment process, normalizing can refine grains and improve the strength of low carbon seamless steel pipes. 2. The medium carbon cold-drawn seamless st...