#Grade A2-70 Fasteners

[abhrajjain0567]

#A2-70 Stainless Steel Fasteners #A2-70 Stainless Steel Bolt #A2-70 Stainless Steel Nuts #Grade A2-70 Fasteners #Stainless Steel Fasteners #A2-70 SS Fasteners Manufacture in India.

[roll-fast]

Standard Bolts Manufacturer and Exporter in India | Roll Fast

Roll-fast takes pride in being the largest manufacturer for bigger diameter bolts in India. These headed bolts HV Bolts, High Tensile Bolts, High Tensile Fasteners, Stainless Steel Bolts, Standard Bolts, Structural Bolts, Hanger Bolts, and Timber Bolts & Washer Head Bolts are hot forged bolts and are manufactured on vertical up setter & Down Setter machines. We can offer hex bolts and screws from M-16 diameter to M-100 diameter in metric threads and from 1/2” diameter to 4” diameter in American UNC threads. We manufacture different type of grade as per ISO 898–1 (4.6, 8.8, 10.9 & 12.9), ISO 3506–1 (A1–50, A1–70, A1–80, A2–50, A2–70, A2–80, A3–50, A3–70, A3–80, A4–50, A4–70, A4–80, A5–50, A5–70, A5–80) (SS304, SS 316, SS 316L, SS316 S31), ASTM A194 (B7, L7, 8M, B8, B8M) etc. We offer bolts According to ISO 4014, ISO 4017, DIN 6914, EN 14399–4, Dast 021, BS 3698, ANSI B 18.2.1, ASME B 18.2.1, ASME B18.2.6M, ASTM F1554, ASTM A 449, BS 3692 etc. or as per customer requirement.

#Standard Bolts #Standard Bolts Manufacturer

[topautoproducts]

Petrochemical Nuts And Bolts

https://www.dtnut.com/petrochemical-nuts-and-bolts.html

The standard refers to the American ASTM or ASME standard with new and unique technical clauses added, which is suitable for a type of petrochemical fasteners used in high temperature and high-pressure environments, including bolts, studs, nuts, etc.

 The mechanical properties and materials specified in GB/T3098/8 "Mechanical Properties of Carbon Steel Fasteners Part VIII Heat-resistant Threaded Connections" are suitable for fasteners that can withstand high temperature, alternating loads, and to a greater extent. Be sure to tighten the axial force.

 High temperature and high-pressure petrochemical fasteners - commodity fasteners and special fasteners

 1. Common Commodity wind energy fasteners:

●The type and size of hexagon head bolts meet the requirements of GB/T5782, A and B grades. The mechanical properties of these petrochemical fasteners refer to the performance grades of carbon steel bolts according to GB/T3098/1 standard: A2-50, A4-50, A2-70, A4-70;

 ●The nut type conforms to GB/T6170 I-type nut and special nut (pipe flange nut). Its mechanical properties refer to the performance grades of carbon steel according to the GB/T3098/2 standard: grades 6 and 8; the performance grades of stainless steel nuts of GB/T3098/15 are A2-50, A4-50, A2-70, A4-70 ;

 2. Special Petrochemical Fasteners:

●In order to be suitable for the conditions of high-temperature resistance, low-temperature resistance, and environmental corrosion resistance, formulate suitable special fasteners, such as full-threaded studs for pipe flanges, in accordance with the provisions of GB/T901. The dimensions of hexagon head bolts and nuts shall be carried out according to national standards.

 ●Selected materials (grades) include medium carbon alloy steels: 35CrMo (applicable temperature +100-525℃); 25Cr2MoV (applicable temperature>-20--575℃); 42 CrMo (applicable temperature +100-525℃). The strength is between 690~890Mpa, that is to say, the medium carbon alloy steel is tempered at high temperature (550℃<=tempering temperature<=600℃) to obtain comprehensive mechanical properties to meet the service of high-temperature environment.

 ●Stainless steel materials selected are: 0Cr18Mi9 (applicable temperature -196--800 ℃); 0Cr17Mi12Mo2 (applicable temperature +196--800 ℃); the strength of stainless steel material obtained by solution treatment is between 690~890Mpa, and the performance level is A2- 70 A4-50 A4-80 grade.

 ●Using American standards, using stainless steel grades and materials: ASTM A193 B8 CL.2 (for temperature +196-525℃); A193 B8M CL.2 (for temperature +196-525℃); A453660 (for temperature +29- 525℃); also includes A320L7 suitable for low temperature and high-pressure environment (applicable temperature -100℃).

 ●Special grade nut material (grade) can choose medium carbon alloy steel: 30CrMo, 35CrMo; guaranteed load

#petrochemical #fasteners

[dtnut]

Petrochemical Nuts And Bolts

The standard refers to the American ASTM or ASME standard with new and unique technical clauses added, which is suitable for a type of petrochemical fasteners used in high temperature and high-pressure environments, including bolts, studs, nuts, etc.

The mechanical properties and materials specified in GB/T3098/8 "Mechanical Properties of Carbon Steel Fasteners Part VIII Heat-resistant Threaded Connections" are suitable for fasteners that can withstand high temperature, alternating loads, and to a greater extent. Be sure to tighten the axial force.

High temperature and high-pressure petrochemical fasteners - commodity fasteners and special fasteners

Common Commodity wind energy fasteners: ●The type and size of hexagon head bolts meet the requirements of GB/T5782, A and B grades. The mechanical properties of these petrochemical fasteners refer to the performance grades of carbon steel bolts according to GB/T3098/1 standard: A2-50, A4-50, A2-70, A4-70;

●The nut type conforms to GB/T6170 I-type nut and special nut (pipe flange nut). Its mechanical properties refer to the performance grades of carbon steel according to the GB/T3098/2 standard: grades 6 and 8; the performance grades of stainless steel nuts of GB/T3098/15 are A2-50, A4-50, A2-70, A4-70 ;

Special Petrochemical Fasteners: ●In order to be suitable for the conditions of high-temperature resistance, low-temperature resistance, and environmental corrosion resistance, formulate suitable special fasteners, such as full-threaded studs for pipe flanges, in accordance with the provisions of GB/T901. The dimensions of hexagon head bolts and nuts shall be carried out according to national standards.

●Selected materials (grades) include medium carbon alloy steels: 35CrMo (applicable temperature +100-525℃); 25Cr2MoV (applicable temperature>-20--575℃); 42 CrMo (applicable temperature +100-525℃). The strength is between 690~890Mpa, that is to say, the medium carbon alloy steel is tempered at high temperature (550℃<=tempering temperature<=600℃) to obtain comprehensive mechanical properties to meet the service of high-temperature environment.

●Stainless steel materials selected are: 0Cr18Mi9 (applicable temperature -196--800 ℃); 0Cr17Mi12Mo2 (applicable temperature +196--800 ℃); the strength of stainless steel material obtained by solution treatment is between 690~890Mpa, and the performance level is A2- 70 A4-50 A4-80 grade.

●Using American standards, using stainless steel grades and materials: ASTM A193 B8 CL.2 (for temperature +196-525℃); A193 B8M CL.2 (for temperature +196-525℃); A453660 (for temperature +29- 525℃); also includes A320L7 suitable for low temperature and high-pressure environment (applicable temperature -100℃).

●Special grade nut material (grade) can choose medium carbon alloy steel: 30CrMo, 35CrMo; guaranteed load

#wind #energy #fasteners

[akddy88]

DIN912 hexagon socket head cap bolts are also called Allen bolts. Hexagon socket head bolts are widely used in mechanical installations because they are easy to fasten, disassemble, and not easy to slip. The thread diameter of DIN912 hex socket bolt is generally M1.4-M64 grade A metric product, the thread tolerance is generally 6g, and grade 12.9 is 5g 6g. Hex socket screw on the market are generally made of carbon steel grade 8.8/10.9/12.9, stainless steel are mainly A2-70/A4-70/A4-80 and copper, nylon 6.6 and other materials, the surface treatment is generally black, galvanized. Production Process of Hex Socket Bolt Specification of Hex Socket Bolt d M1.4 M1.6 M2 M2.5 M3 M4 M5 M6 M8 M10 M12 (M14) M16 (M18) M20 P Coarse0.30.350.40.450.50.70.811.251.51.75222.52.5 Fine 1--------11.251.251.51.51.51.5 Fine 2---------11.5--22 dk Max2.633.84.55.578.51013161821242730 Max for knurled head2.743.143.984.685.687.228.7210.2213.2716.2718.2721.3324.3327.3330.33 Min2.462.863.624.325.326.788.289.7812.7315.7317.7320.6723.6726.6729.67 da Max1.822.63.13.64.75.76.89.211.213.715.717.720.222.4 ds Max1.41.622.534568101214161820 Min1.261.461.862.362.863.824.825.827.789.7811.7313.7315.7317.7319.67 e Min1.51.731.732.32.873.444.585.726.869.1511.4313.72161619.44 k Max1.41.622.534568101214161820 Min1.261.461.862.362.863.824.825.77.649.6411.5713.5715.5717.5719.48 s Nominal1.31.51.522.5345681012141417 Min1.321.521.522.022.523.024.025.026.028.02510.02512.03214.03214.03217.05 Max1.361.561.562.062.583.084.0955.146.148.17510.17512.21214.21214.21217.23 t Min0.60.711.11.322.5345678910 w Min0.50.550.550.851.151.41.92.3344.85.86.87.88.6 d (M22) M24 (M27) M30 (M33) M36 M42 M48 M56 M64 M72 M80 M90 M100 P Coarse2.5333.53.544.555.566666 Fine 11.52222333444444 Fine 22------------- dk Max33364045505463728496108120135150 Max for knurled head33.3936.3940.3945.3950.3954.4663.4672.4684.5496.54108.54120.54135.63150.63 Min32.6135.6139.6144.6149.6153.5462.5471.5483.4695.46107.46119.46134.37149.37 da Max24.426.430.433.436.439.445.552.66371798797107 ds Max22242730333642485664728090100 Min21.6723.6726.6729.6732.6135.6141.6147.6155.5463.5471.5479.5489.4699.46 e Min19.4421.7321.7325.1527.4330.8536.5741.1346.8352.5362.8174.2185.6197.04 k Max22242730333642485664728090100 Min21.4823.4826.4829.4832.3835.3841.3847.3855.2663.2671.2679.2689.1399.13 s Nominal1719192224273236414655657585 Min17.0519.06519.06522.06524.06527.06532.0836.0841.0846.0855.165.175.185.12 Max17.2319.27519.27522.27524.27527.27532.3336.3341.3346.3355.465.475.485.47 t Min111213.515.518192428343843485460 w Min9.410.411.913.113.515.316.317.5192225273234 Application Area of Hex Socket Bolt Hexagon socket bolts are widely used, ranging from small hardware, small electronic products, electrical products, to automobiles, ships, aircraft cannons etc. DIN912 Allen bolts are mainly used in electronic products, electrical appliances, electrical appliances, chemicals, water conservancy, machinery and equipment, furniture and other fields. It is worth mentioning that the hexagon socket head bolts are particularly used in the products of the mold factory. This may be due to the different types of bolts used on different products. Some products require hex socket head cap screws to connect and fasten, and some require other types of bolts to connect and stabilize.Custom Bolts website:http://www.jinruibolt.com/bolts/

[kmsteelindia]

Tips That Can Increase the Working Life Of Steel Fasteners

Fasteners and other fitting materials of astm a106 grade b pipe suppliers are a key part of the hardware family. These are high in demand for a variety of applications for mechanically attaching two or more items together. These are available in many materials or coatings, and Stainless Steel 304 Fasteners are in high demand since they are inexpensive to purchase and have anti-corrosion capabilities. However, if not properly maintained, they corrode. These recommendations are for you if you want to preserve the longer lifespan of stainless steel 316 fasteners in your home or office. Take a deep breath and follow them all to extend their service life.

Use of Proper Slotting Tools: Using the proper slotting tools is one of the most popular ways to extend the life of Stainless Steel 316L Fasteners. It is necessary to select an appropriate tool for slotting in order to assure holding capacity as well as determine pull out strength. This may also ensure appropriate installation, which aids in the prevention of failure.

Standard Stainless Steel Grade Selection: This valuable metal offered by alloy steel pipe suppliers in India is available in several grades, and choosing correctly among them is critical to preventing corrosion problems with the fastener. Different standards may cost you more than any other choice, but they bring surprising and unrivalled results.

Lubrication of threads: Lubrication of threads is required to maintain the long life of a stainless steel fastener and a2 70 hex head bolt because it helps to avoid stress and strain due to their sticking together around the sliding surface.

Electrochemical polishing may also increase the lifespan of your stainless-steel fastener since the layer of chromium oxide protects it from damage. It also reduces their possibilities of coming into contact with rust or other damage.

Monitoring: Last but not least, proper monitoring after a while tends to boost the working life of a stainless-steel fastener and a4-70 hex bolt. It also assists you in determining if they are becoming loose or if their grip is decreasing, etc. As a result, you can take immediate action to deal with the situation and avoid major damage.

These simple suggestions will assist you in improving the serving life of stainless steel fasteners. Aside from the above considerations, purchasing the correct model from a reputable manufacturer will also make a significant difference in their working and life. Keep all of these principles in mind since they assure long-term work that saves you time, money, and personnel.

Other forms of stainless-steel fasteners resist brittleness at lower temperatures. Nickel is incorporated into these astm a453 grade 660 steel screws. Nickel also helps to de-magnetize stainless steel. Manganese can alternatively be used in place of, or in conjunction with, nickel to achieve a similar result at a lesser cost.

Carbon can also be utilized to strengthen the steel alloy. When exposed to extreme heat, these fasteners can harden and strengthen, resulting in finer elements such as the screw point and threads.

[qishengmetal]

Stainless Steel Group Of Fasteners And Performance Science

Stainless steel group of fasteners

 1.Types of stainless steel

 Stainless steel can be divided into austenitic stainless steel, martensitic stainless steel, ferritic stainless steel, duplex stainless steel.

 (1) Austenitic stainless steel

 Stainless steel contains high chromium (Cr) and nickel (Ni), usually can not be hardened by heat treatment, has good corrosion resistance and ductility, non-magnetic or low magnetic.

 (2) Martensitic stainless steel

 Stainless steel contains a large amount of chromium (Cr), but nickel (Ni) and other alloying elements are few, can be hardened by heat treatment to improve strength, but ductility is reduced, usually magnetic.

 (3) Ferritic stainless steel

 Stainless steel, carbon (C) content of less than 0.1%, chromium (Cr) content is usually 11%-18%, usually can not be hardened by heat treatment, has a high magnetic properties.

 (4) Duplex stainless steel

 Stainless steel with austenitic phase and ferritic phase, compared with austenitic stainless steel, has better corrosion resistance, higher chromium content, lower nickel content, high strength and magnetic properties.

 Naming rules for nuts

 For low carbon austenitic stainless steel with carbon content less than 0.03%, the letter "L" can be added to the mark. For example: A4L-80.

 1. Stainless steel group naming

 The name of the stainless steel group by a letter indicating the stainless steel category.

 (1) A indicates austenitic

 (2) C indicates martensitic

 (3) F indicates ferrite

 (4) indicates duplex (austenitic-ferritic)

 2. The naming of the performance level of screws

 The name of the performance grade of bolts, screws and studs is indicated by a number.

 For example 1: A2-70 indicates A2 group steel, 70 represents the product strength grade of 70 grade, bolts, screws and studs tensile strength of 700MPa or more, the guaranteed load of the nut to meet the requirements of 70 grade, in loading the corresponding load force and maintain 15S, the nut should not be unbuckled or broken.

 For example 2: A4-80 means A2 group steel, 80 means the strength grade of the product is 80 grade, the tensile strength of the bolt, screw and stud reaches 800MPa or more, the guaranteed load of the nut meets the requirements of 80 grade, and the nut should not be unbuckled or broken when the corresponding load force is loaded and kept for 15S.

 In addition, A2-035 represents the guaranteed stress of the thin nut reaches 350MPa or more.

 We are a professional manufacturer of metal fasteners and have been committed to producing quality products, if you are interested in this, please contact Qisheng Metal Co.

[carsai-precisionparts]

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[sidhagiri-blog]

Get the best A4 Stainless Steel Bolts from Siddhagiri Metals & Tubes

If you are looking for a4 stainless steel bolts, at that point, you have come to the right place. Siddhagiri Metals & Tubes provide the best a4 stainless steel bolts all over the world. Siddhagiri Metals & Tubes has major clients and distributors in the whole of Middle East region who can supply a4 stainless steel bolts in very quick deliveries.

At Siddhagiri Metals & Tubes, we have been continuously striving for perfection and the best quality a4 stainless steel bolts we can manufacture. Siddhagiri Metals & Tubes is the biggest manufacturer for larger diameter bolts in India, with exports to the Middle East region. Siddhagiri Metals & Tubes is proud to say that our a4 stainless steel bolts are sold in so many countries all over the world.

Stainless steel bolts include hexagon bolts and setscrews as well as flange bolts, cup square bolts, wing bolts, and roofing bolts and are most commonly chosen due to their resistance to corrosion in an external environment.

A large portion of our bolts are accessible in A2 and A4 stainless steel, with some accessible in specific tensile strengths including A2-70 and A4-70. If the tensile strength is important, please mention this to your sales contact at the time of inquiry.

Stainless steels contain sufficient chromium to form a passive film of chromium oxide, which prevents further surface corrosion and blocks corrosion from spreading into the metal’s internal structure. A4 stainless steel bolts grade then is also austenitic; non-magnetic and suitable for all the situations as A2 but has the added advantage of being suitable for marine solutions often called Marine Grade stainless steel. The molybdenum builds the corrosion protection from withstanding assault from numerous industrial chemicals and solvents and obviously, chlorides. Used in the production of inks, photographic chemicals, surgical implants, and the marine environment.

Both a2 stainless steel bolts and a4 stainless steel bolts grades come in three property classes: 80 (high-strength), 70 (cold-worked), and 50 (soft) – the most widely recognized of which is the 70 class which is cold drawn” from bar stock.

In summary, stainless steel fasteners should be used when you need to minimize the risk from corrosion. A2 stainless steel bolts are a very good grade for this, but when you need that little bit more, for example in a marine environment, and then it is best to go for a4 stainless steel bolts.

So, please give us a call at [phone]/66109206 and get the best a4 stainless steel bolts.

#Hydraulic Coupling manufacturers #High Pressure Ball Valve manufacturers

[abhrajjain0567]

JF Engineering Products LLP is Prominent Manufacturer, Supplier and Stockist of A2-70 Stainless Steel Fasteners. We Provide High quality of A2-70 SS Fasteners at best price. Click here and Get more Info. JFE is the best manufacturer of buttweld and forged pipe fittings, flanges, fasteners, bars, pipes and tubes of high quality of various grades and materials in Mumbai, India.

#A2-70 Stainless Steel bolt #A2-70 Stainless Steel Stud Bolt #A2-70 Stainless Steel Hex Bolt #Grade A2-70 SS Fasteners #Stainless Steel Fasteners #ASTM A193 SS A2-70 Hex Bolt