Weight of galvanized layer - "red line indicator"In the new national standard, the zinc layer weight of galvanized steel pipes first proposed the "bottom line requirements"! Namely: In the old version of the standard only on the basis of "negotiating terms required" on the basis of an increase of "the inte...

China National Standard GB/T3091-2015 Welded Steel Pipe for Low Pressure Fluid Transportation,Line standard scaffolding tube standard: YB/T4202-2009Raw material (strip) implementation of standards: GB/T3524-92 welded steel pipe with the implementation of GB/T13793 standards applicable to a variety of structural parts, ...

The fluid flow equations and formulas presented thus far enable the engineer to initiate the design of a piping or pipeline system, where the pressure drop available governs the selection of pipe size. (In addition, there may be velocity constraints that might dictate a larger pipe diameter. This is discussed below in the section on velocity considerations for pipelines.Once the inner diameter (ID...

Steel is less malleable and harder than mild steel.Mild steel s less brittle than steel.Steel is more resistant to corrosion.Mild steel can be further strengthened through the addition of carbon.The basic difference is that s/s has very little carbon and is alloyed with chromium, nickel, molybdenum and other elements to improve its mechanical and chemical properties.

Lighter than other framing materials - no lifting equipment required on site. One person can easily carry a 5-metre fabricated panelEasy material selection - no need to cull or sortStraight walls and Square cornersCalls backs due to cracks are eliminatedWindows and doors open and close as they shouldLess scrap and waste (2% for steel vs. 20% for timber)Environmental selling and green positioningCo...

Abrasion occurs when materials are rubbed across one another over a period of time. Some abrasion is intentional, such as sanding, grinding, and blasting. However, unintentional abrasion can lead to component failure so it is important to use the proper materials to ensure that surface wear does not lead to unanticipated breakdown of structures or parts. While steel in general has excellent resist...

Steel provides a number of benefits to the consumer includingHigh strength results in safer structures, less maintenance and slower aging of structureFire safetyNot vulnerable to termitesNo additional preservative chemicals are required over and above the galvanising process to treat steel, unlike the treatment of timberNot vulnerable to any type of fungi or organismLess probability of foundation ...

How Long Does HDG Last? Hot-dip galvanizing (HDG) is often used to protect steel from corrosion in some of the harshest environments imaginable, yet it provides maintenance-free longevity for decades. The corrosion resistance of hot-dip galvanizing varies according to i...

What is Nominal size and actual size? A, nominal size: the standard size specified in the standard, the user and the manufacturer want to get the ideal size, but also the contract specified in the order size. ...

What is Delivery length? Delivery length, also known as the length of the user requirements or contract length. There are several rules for the length of the delivery: A, usually length (...

what is the hardness for metal ? The ability of a metal material to resist a hard object's crushing surface is called hardness. According to the test method and the scope of application, the hardness can be divided into Brinell hardness, Roc...

What is the percentage reduction of area in iron and steel industry? In the tensile test, the maximum reduction of the cross-sectional area at the reduced diameter and the percentage of the original cross-sectional area after the specimen is broken is called the section...

What is the difference between Carbon Steel and Stainless Steel Pipe Carbon steel and stainless steel are both metals that are used in a wide array of commercial and consumer applications. The main difference between the two is in the components that are added to the st...

What is impact toughness? Impact toughness is the ability to reflect the metal to the external impact load resistance, generally by the impact toughness (ak) and impact (Ak) said, the unit were J / cm2 and J (Joule). Impact toughness or impact test (referred to as "impa...

The process used for the extraction of metals in their pure form from their ores is referred to as metallurgy.Methods of obtaining pure metals from their ores1.Crushing and grinding of ore2.Concentration of ore3.Roasting,Calcination and smelting4.Reduction5.Refining of metalsCrushing and grinding of oreOres are crushed into a fine powder in big jaw crushers and ball mills.This process is called p...

A scaffold is defined as an elevated, temporary work platform. There are three basic types of scaffolds:Supported scaffolds, which consist of one or more platforms supported by rigid, load- bearing members, such as poles, legs, frames, outriggers, etc.Suspended scaffolds, which are one or more platforms suspended by ropes or other non-rigid, overhead support.Other scaffolds, principally manlifts, ...

What are the advantages of using galvanized steel pipe and fittings? Galvanized steel is steel with a protective zinc coating. This coating has many advantages over other methods used to protect steel, and it makes galvanized steel pipe, fit...

What is the benefit of using steel pipe? Steel pipes are traditionally being used for conveying water and gases because of their hollow structure associated with strength, durability and elasticity. Steel pipes are beneficially used where high resistance is required to ...

How to Identify Seamless or ERW Stainless Steel pipes? If it is ASTM A53, Type S means seamless.Type F is furnace but welded,Type E is Electrical resist welded.Thats how. It is the easiest way to identify wether pipe is seamless or ERW. ...

What is the Difference Between Seamless and ERW Stainless Steel Pipes? Electric Resistance Welding (ERW) pipe is manufactured by rolling metal and then welding it longitudinally across its length. Seamless pipe is manufactured by extruding the metal to the desired lengt...

How to produce seamless steel pipe ? We have 20 steps to produce seamless steel pipe 1.Inspection of round steel 2.Peeling ...

What is the Lifespan of Stainless Steel Pipes? These are very valid question and a couple you probably haven’t considered. Whether you’re talking about a home or a business, the answer to is something to be aware of. Why? Because repairing p...

Why do we choose stainless steel for transmission of drinking water? Because the stainless steel we youfa offer has following advantages: ...

If a layer of condensation water can be seen in the galvanized layer surface of the galvanized products,like galvanized steel roofing sheet,galvanized steel coil, it will turn into corrosive water solution which sticks to the surface of galvanized layer after reacting with oxygen, carbon dioxide, hydrocarbon, dust and other chemical gases, thus a kind of electrolyte will generate. The electrolyte ...

What is press piercing? With the crowding method will be solid billet into the larvae into the capillary process. After the perforation of the capillary with the bottom of the cup and the two, as a pipe jacking, rolling pipe rolling pipe and pipe extrusion of the blank.In the pres...

Specifictaions of Common galvanized steel pipeNominal DiameterOuter DiameterWall thickness Increased Weight's coefficient of galvanized steel vs Black iron pipeMMMMMMCommon steel pipe Thicken steel pie610.021.0641.059813.52.751.0561.0461017.03.501.0561.0461521.33.151.0471.0392026.83.401.0461.0392533.54.251.0391.0323242.35.151.0391.0324048.04.001.0361.0305060.05.001.0361.0286575.55.251.0341.0288088...

How to calculate the pressure seamless steel pipe can sustain? To know seamless pipe seamless steel pipe diameter wall thickness can withstand pressure calculation method (different tensile strength of different materials)Pressure = (wall thickness * 2 * steel pipe tensile strength)...

Sch 40 electric resistance welded pipe is generally used for utility lines such as compressed air and water lines