M4-M64 Alloy B7 round head bolt nut and washer manufacturer

This is useful for selecting bolts with different strength levels for different high pressure and high temperature applications. ASTM A193 grade b7 hex bolts and other types have a minimum tensile strength of up to 125ksi.

The high lead content in STM A320 grade L7M AS bolts results in relatively low ductility and plasticity.

ASTM A194 specification covers carbon, alloy and stainless steel nuts for high pressure and/or high temperature service. American National Standard Heavy Duty Hex Series (ANSI B 18.2.2) shall be used unless otherwise specified. Nuts no more than 1 inch in nominal size shall conform to UNC Series Class 2B.

B7 threaded studs and short head bolts are readily available in the market. B7 grade bolts are often used for pipe flange connections. These bolts are usually sold in a normal bare metal finish, but are usually hot-dip galvanized, galvanized, Xylan coated, PTFE coated, or otherwise treated with a corrosion resistant coating.

B7 y B7M se trataran termicamente mediante enfriamiento rapido y revenido en un medio liquido. Para los sujetadores B7M, el tratamiento termico final, posiblemente una operacion de templado si se realiza a un minimo de 1150 ¡ãF [620 ¡ãC], debe realizarse despues de todas las operaciones de mecanizado y formacion, incluido el laminado de roscas y cualquier tipo de corte. Preparacion de la superficie que permite realizar pruebas de dureza, evaluacion no destructiva o tension ultrasonica de pernos.

The ASTM A194 specification covers carbon, alloy and stainless steel bolts for high pressure and/or high temperature service.

Fasteners made from this austenitic stainless steel require carbide solution treatment of the bar to be threaded, or carbide solution treatment after the head operation of bolts with forged heads.

ASTM A193 Grade B7 bolts are made of chrome-molybdenum material with high tensile strength and good elongation properties.

Standard ASTM A193 B7 fasteners typically have a common bare metal finish. However, ASTM A193 Grade B7 studs can be galvanized, hot-dip galvanized, xylan coated, teflon coated if requested by the buyer. Coating ASTM A193 B7 fasteners can help improve the corrosion resistance of fasteners. This ASTM A193 Grade B7m bolt is typically used to fasten medium high temperature service materials. These bolts are liquid quenched from 50¡ãF to 900¡ãF and they can be air quenched from -40¡ãF to 900¡ãF.

ASTM A193 Grade B7 bolts and studs are made from chrome molybdenum steel and are quenched and tempered (heat treated) to achieve the desired mechanical properties (strength). Grade B7 is the most commonly used A193 bolt grade in construction.

A194 2H Heavy Duty Hex bolts are designed for high strength, high temperature or high pressure applications and are usually available in a plain finish.

The specification for ASTM A320 Grade L7m materials covers alloy steel and stainless steel bolting materials for low temperature applications. ASTM A320 L7 Studs can also be used in applications with ambient temperatures up to -150oF. ASTM A320 grade L7m bolts and ASTM A320 bolts have a minimum Charpy impact value of 15 foot-pounds at this temperature.

Grades 7, 7M, 8 and 8M have 8-10% nickel added. Grade 8 material lacks molybdenum, but Grade 8M ASTM A194 2h material contains all the elements mentioned in the composition, making it the strongest and most expensive class of materials in this grade.

Producing Standard
ASME B18.2.2
DIN 934 

Nuts with a nominal size over 1 inch shall be a UNC Series Class 2B fit or an 8 UN Series Class 2B fit. High strength ASTM A194 grade 2H nuts are common in the market and are often replaced by ASTM A563 grade DH nuts due to the limited availability of DH nuts in certain diameters and finishes.

ASTM A193 Grade B7 specification covers the requirements for high strength alloy steel bolting materials for high temperature or high pressure service and other special purpose applications. It is a standard specification that defines typical chemical composition, mechanical properties, hardness requirements, preferential heat treatment, product marking, certification, and other requirements for bolted connections used in pressure vessel service, valves, flanges, and fittings. ASTM A193 defines SI (metric) and inch-pound units.

ASTM A320 L7M Grade AS Fasteners are commonly used in oil and gas exploration and processing equipment – piping, piping and heat exchangers.

Bolts are chrome molybdenum heat treated steel according to ASTM A193 B7m specification for bolts. The primary alloy components of ASTM A193 Grade B7 bolts are chromium and molybdenum. These ASTM A193 B7 Metric Bolts are manufactured by heat quenching and tempering. Heat treating A193 B7 bolt material helps to develop desired mechanical properties such as increased tensile strength of ASTM A193 B7 hex bolts after heat treatment.

A320 Gr L7 studs are subject to certain mandatory mechanical tests, namely: tensile test, impact test and hardness test.

A193 B7 Cadmium Plated stud bolts are made of alloy steel for high temperature environments. ASTM standards cover alloy steel and stainless steel bolting materials; this specification covers fasteners for pressure vessels, valves, flanges, and fittings.

Since these are heavy duty tension nuts, they are used in high vibration and high stress applications such as aircraft engine parts and automotive engine parts. ASTM A194 Class 2h material consists of all classes of carbon, manganese, phosphorus, sulfur and silicon.

ASTM A193 Grade B7 specification covers requirements for high tensile alloy steel bolting material for use in high temperature or high-pressure service and other special purpose applications.

ASTM A193 Grade B7M bolts and studs have the same chemical composition as Grade B7 (quenched and tempered medium carbon alloy steel) but have lower strength requirements requiring 100% hardness testing on all fasteners manufactured in the batch. Grade B7M bolts are resistant to chloride, sulfide and hydrogen stress corrosion cracking (SCC) and are often used in sour gas service.

It is a standard specification defining typical chemical composition, mechanical properties, hardness requirement, preferential heat treatment, product marking, certification and other requirements, suitable for bolting used in pressure vessel service, valves, flanges and fittings. ASTM A193 defines both SI (Metric) and inch-pound units.

ASTM A193 Grade B7 specification covers the requirements for high strength alloy steel bolting materials for high temperature or high pressure service and other special purpose applications. It is a standard specification that defines typical chemical composition, mechanical properties, hardness requirements, preferential heat treatment, product marking, certification, and other requirements for bolted connections used in pressure vessel service, valves, flanges, and fittings. ASTM A193 defines SI (metric) and inch-pound units.

Alloy steel grade 2H gaskets are further cut, hydrotested, annealed, straightened and pickled. The manufacturing process of our Alloy Steel Grade 2H Split Gaskets is carried out in a state-of-the-art production facility under the proper supervision of industry experts.

ASTM A193 Grade B8M Grade 1 Fasteners are similar to Grade B8 but are made of AISI 316 stainless steel instead of AISI 304 stainless steel. Type 316 stainless steel has better corrosion resistance than type 304 stainless steel due to the addition of molybdenum.

ASTM A194 bolts include metals such as manganese and silicon, with additions of phosphorus, sulfur, and carbon. ASTM A194 gr 2h bolts are suitable for high pressure or high temperature service, or both. Further machining is possible by centerless grinding or cold drawing.

ASTM A194 2H Heavy Duty Hex Bolts are the core product and are in stock. HT PIPE is a leading supplier of ASTM A194 2H Heavy Duty Hex Nuts. These are heavy duty hex nut type bolts as directed by ASTM A-193 specification.

ASTM A193 Grade B7 Heavy Duty Hex Head Bolts are high strength fasteners made from heat treated alloy steel AISI 4140/4142 quenched and tempered.

The material is made up of carbon, manganese, phosphorus, sulfur, silicon, chromium and molybdenum in the composition.