fasteners 1-4-3 hex bolt and steel bolts A320 L7 hex bolt alloy bolt

Nilo Alloy 36, W.Nr 1.3912, Invar 36® is a nickel-iron, low controlled expansion alloy that contains 36% nickel and possesses a rate of thermal expansion approximately one-tenth that of carbon steel.
Invar 36 Specifications: UNS K93600, W.Nr 1.3912

Common Trade Names: Nickel Alloy 36, Invar 36®, Nilo 6®, Pernifer 6®
Invar 36® is a nickel-iron, low expansion alloy that contains 36% nickel, Invar 36 has a low coefficient of expansion from cryogenic temperatures to about +500°F (260°C).
Invar 36 Tube OD:0.2-6mm, WT: 0.02-2mm

Nilo / Alloy K W.Nr.: 1.3981
UNS: K94610 ASTM F15
Fixed-expansion glass-encapsulated iron-nickel-cobalt alloys, Kovar alloys, have a linear thermal expansion coefficient similar to that of hard glass within a certain temperature range
For mating sealing with hard glass

ASTM A335 P91 grade pipe is a high quality pipe for high pressure boilers. P91 tubing is ideal for bending, flanging or for welding and similar operations. The material of steel should adhere to the requirements of chemical composition, tensile properties and hardness.
Type Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”
Manufacturing technique Hot rolling /Hot work ,Cold rolling
Producing Standard ASME B36.10 ASME B36.19
Material Alloy Steel ASTM A333 Grade 3, Grade 6,Grade 8,Grade 9
ASTM A335 P5,P9,P11,P12,P22,P91,P113

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.

Hot rolled 4140 steel also has good fatigue resistance and impact resistance after heat treatment.

The a182 f9 material contains a certain amount of chromium and molybdenum, both of which contribute to a longer service life and therefore longer life.

Monel 400? can be used in temperatures up to 1000 oF. Monel K-500 is basically a better version of 400 and has higher strength and hardness.

They can also be seamless in nature. The nominal diameter of the seamless fittings ranges from ? inches to 24 inches and the welded fittings range from ? inches to 120 inches in diameter.

The flange connection mainly have leakage problem, and the leakage quantity should be controlled within the allowable range of process and environment.

Alloy steel flanges have corrosion oxidation stress corrosion cracking and crevice corrosion resistance.

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.

We can supply chrome molybdenum alloy flanges sorted by alloy grade, size and pressure.

The carbon content in the Sa182 F9 flange is lower, so the weldability of this alloy is much better. Generally, higher carbon content in alloys promotes intergranular corrosion, especially during high heat treatments such as welding.

Hastelloy C276 ASTM Standard B575 Plate is a nickel-molybdenum-chromium superalloy with an enhancement of tungsten made to have superb deterioration resistance in a wide variety of extreme atmospheres.

Alloy steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low alloy steels and high alloy steels. The difference between the two is disputed. Smith and Hashemi define the difference at 4.0%, while Degarmo, et al., define it at 8.0%.[1][2] Most commonly, the phrase “alloy steel” refers to low-alloy steels.

A335 P91 material, we use ASTM A335 Gr P91 Welded Pipe
Heat treatment method to standardize the strength of the material. 9% chromium and 1% molybdenum make the pipe strong and corrosion resistant. The material is resistant to wear and high temperature creep. ASTM A335 P91 pipe does not deteriorate, reduces thickness, and has higher creep strength. Pipeline applications are primarily used in power generation, petrochemical, heater and reheat liners, boilers, and petroleum services.
Type Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”
Manufacturing technique Hot rolling /Hot work ,Cold rolling
Producing Standard ASME B36.10 ASME B36.58

Adding nickel adds toughness to the alloy. Similarly adding chromium to chrome moly flanges aids in enhancing other mechanical properties such as temperature strength, hardness, as well as corrosion resistance.

825 is an austenitic Ni – Fe – Cr – Mo – Cu nickel based alloy developed to resist corrosion in very aggressive media.Alloy 825, also known as Incoloy 825, is a nickel-iron-chromium alloy with molybdenum and copper added.

The grade mark consists of the grade symbol “2H” and the manufacturer’s identification mark.

Chrome molybdenum grades P11, P22, P91 and P92 are used in the power industry. Chromium molybdenum grades P5 and P9 are used in petrochemical refining processes. Chrome molybdenum forged fittings and flanges are available in grades F5, F9, F11, F22, F91, F92. Chrome-molybdenum alloy butt welded pipe fittings are available in WP5, WP9, WP11, WP22, WP91, WP92 grades. F11 and F22 materials comply with NACE-MRO 175.

Commercially pure wrought Nickel with good mechanical properties over a wide range of temperature and excellent resistance to many corrosives, in particular hydroxides.

Good resistance to corrosion in acids and alkalis and is most useful under reducing conditions. Outstanding resistance to caustic alkalis up to and including the molten state. In acid, alkaline and neutral salt solutions the material shows good resistance, but in oxidizing salt solutions severe attack will occur. Resistant to all dry gases at room temperature and in dry chlorine and hydrogen chloride may be used in temperatures up to 550C. Resistance to mineral acids varies according to temperature and concentration and whether the solution is aerated or not. Corrosion resistance is better in de aerated acid.

ASTM A182 alloy steel F12 flanges are corrosion resistant. ASTM A182 alloy steel F12 flanges also have high dimensional accuracy. These ASTM A182 alloy steel F12 flanges also have a rust-proof finish. They are used in numerous industrial applications. These applications include the paper and pulp industry, the oil and gas industry, and more.

Chrome alloy steel flanges are manufactured in accordance with ASTM A182 F11/F12 and are widely used in nuclear power plants, power plants, water systems, electric power, oil fields, pipeline engineering, natural gas, marine engineering, shipbuilding and other industries. These flanges are harder and stronger than regular steel, but not as corrosion resistant as stainless steel.

ASTM A320 Grade L7 is a material specification for bolts, studs, nuts, and other fasteners designed for high temperature bolting applications. ASTM A320 L7 grades are divided into 4 performance classes, A, B, C, and D, each with different tensile and stress rupture properties. Class 660 fasteners are used to bolt boilers, pressure vessels, pipe flanges and valves for high temperature service.

ASTM A335 P91 Seamless Pipe is one of the seamless pipes that standardize A335 in various industries. ASME SA 335 Grade P91 Alloy Steel Pipe is made of chrome molybdenum alloy. These pipes contain 1% molybdenum, 9% chromium and nickel, manganese, silicon and carbon. ASTM A335 P91 pipe has very high tensile strength, yield strength, impact cracking resistance, corrosion cracking resistance and oxidation resistance.
Type Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”
Manufacturing technique Hot rolling /Hot work ,Cold rolling
Producing Standard ASME B36.10 ASME B36.23

La especificacion ASTM A193 Grado B7 cubre los requisitos para materiales de empernado de acero aleado de alta resistencia para servicio de alta temperatura o alta presion y otras aplicaciones de proposito especial. Es una especificacion estandar que define la composicion quimica tipica, las propiedades mecanicas, los requisitos de dureza, el tratamiento termico preferencial, el marcado del producto, la certificacion y otros requisitos para las conexiones atornilladas utilizadas en el servicio de recipientes a presion, valvulas, bridas y accesorios. ASTM A193 define unidades SI (metricas) y pulgadas-libras.

The wider range of flanges are being offered like ASTM A182 F9 slip flange, F9 alloy welded steel socket flange, alloy steel F9 orifice flange, A182 F9 threaded and screwed flange etc. Imperative for the uniqueness of Alloy Steel F9 Socket Weld Flanges is the allotropy of iron-that is, its existence in two crystalline structures.

A182 Class F1 Socket Weld Flanges were originally developed for small high pressure pipelines. They have the same static strength as slip-on flanges, but have 50% higher fatigue strength than double-welded slip-on flanges.

Monel 400? also has excellent resistance to stress corrosion cracking in most freshwaters.Our Monel Long Radius Elbow Fittings is available at various angles like 30 degrees, 45 degrees, and 90 degrees.

While chromium is an important alloying agent in a335 P91 piping, it is known to prevent corrosion and has a high resistance to oxidation at high temperatures. Since these pipes are surface treated or coated, they are also protected against corrosion. Surface coating can be accomplished by various techniques such as passivation, phosphating, oil immersion, varnishing and shot peening.
Type Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”
Manufacturing technique Hot rolling /Hot work ,Cold rolling
Producing Standard ASME B36.10 ASME B36.19
Material Alloy Steel ASTM A333 Grade 3, Grade 6,Grade 8,Grade 9
ASTM A335 P5,P9,P11,P12,P22,P91,P150

HastelloyC-276 (Hastelloy) is a tungsten-nickel-chromium-molybdenum alloy with extremely low silicon-carbon content and is considered to be an all-around corrosion-resistant aluminum alloy. The key moisture-resistant chlorine, various air-oxidizing fluorides, isopropyl titanate solutions, hydrochloric acid and air-oxidizing salts, have good corrosion resistance in ultra-low temperature and standing temperature sulfuric acid. Therefore, in the past 30 years, it has been widely used in extremely corrosive natural environments such as chemical plants, petrochemicals, flue gas desulfurization, pulp and paper industry, and environmental protection.

Corrosion resistance

The aluminum alloy has the following characteristics: 1. It has good corrosion resistance to most corrosive substances under the two conditions of air oxidation and repair. ¢ÚIt has good resistance to pitting corrosion, void corrosion and intergranular corrosion. The higher content of Mo and Cr makes the aluminum alloy resistant to corrosion by chloride ion content, and the W element further improves the corrosion resistance. At the same time, Hastelloy C-276 aluminum alloy is one of the only types of raw materials that are resistant to wet chlorine, hypochlorite and chlorine dioxide saturated solutions. Ester solution has obvious corrosion resistance. It is one of the very few raw materials that can be used as a hot sulfuric acid saturated solution.

Users of SA182 Chrome Moly Gr.f9 forged bar do not rely solely on external coatings or finishes.