ASTM A193 B7 B7M carbon steel Fully Threaded Rod Nuts Stud Bolts and nuts

ASTM A193 B7 B7M carbon steel Fully Threaded Rod Nuts Stud Bolts and nuts

Description:

PTFE is by the chemist Roy Planck in 1938 Dr (Roy j. Plunkett) in the Jackson laboratory of dupont in New Jersey, us surprise [1] : when he tried to make a new refrigerant chloride fluorocarbon compounds, four fluorine ethylene polymerization in high pressure storage container (container wall iron becomes polymerization catalyst).Dupont in 1941 its patents, and in 1944, in the name of the "PTFE" registered trademark.Subsequently, dupont in PTFE® again;Outside of ptfe resin has developed a series of products, including PTFE.AF (amorphous fluorinated polymer), PTFE;FEP (fluorinated ethylene propylene resins), PTFE.FFR (fluorine polymer foam resin), PTFE.NXT (fluorine polymer resin), PTFE;PFA (perfluorinated alkoxy resin) and so on.
Called the PTFE English Polytetrafluoroetylene, hereinafter referred to as PTFE, PTFE, F4, etc.Ptfe (Polytetrafluoroethene), commonly referred to as "non-stick coating" or "material" easy clean huo;Is a kind of using all the hydrogen atoms in the fluorinated polyethylene synthetic polymer materials.This material has the acid alkali resistance, resistance to the characteristics of various kinds of organic solvent, almost insoluble in all solvents.At the same time, ptfe has the characteristics of high temperature resistance, low coefficient of friction of it, so can make lubrication, and also become the easy clean huo ideal coating of pipe lining.
ASTM A193 B7 B7M Fluorocarbon coated PTFE Stud Bolts Full threaded Rod with ASTM A194 2H Heavy Nuts
The method of applying the coating shall ensure that damage through delayed embrittlement (hydrogen embrittlement) is avoided. This is particularly important in the case of high tensile steels of Grades B, C and D with tensile strength > 1000 N/mm². The application should be carried out in accordance with ASTM B841 and associated standards. The surface shall be treated with chromate conversion treatment according to ASTM B841 Section 4.
The coating shall be capable of passing the adhesion test specified in ASTM B571

The PTFE top coat for bolting components shall be Xylan 1070® (or) equivalent. The selected material shall contain polytetrafluorethylene together with polyamide /polyimide ester and colouring pigment and shall be the base cure type. The selected material shall withstand the temperature range of -50°C to + 200 °C.
The dry film thickness of the PTFE coating on the bolting component shall not be less than 25 microns and not greater than 40 microns. The coating shall be applied in accordance with ASTM D823. The application of coating shall be applied with a minimum of two (or) more layers.
The fluorocarbon coating system (PTFE) shall be tested in an ASTM B117 salt fog chamber for 3000 hours.
A corrosion resistance test for PTFE coat over Zn-Ni plated stud-bolts shall be carried out in accordance with ASTM B117 (salt spray test) for the time duration of 3000 hrs (minimum).

Jiaxing Haina Fastener co. Ltd was established in 2010, located in the hometown of fasteners jiaxing city. For many years of export experience, our products has been best-selling in Europe, the United States, the Middle East and Southeast Asia. The products are manufactured by more functions machine, which is brought in domestic and foreign well-known enterprises. The products made are fully compatible with the international standards, well received by domestic and foreign customers. Through scientific management, Jiaxing Haina fastener Ltd company has been obtained ISO9000 certificate of Quality Managerment System, SGS and BV international certificate system of Make in China.

Product standards including DIN, ISO, GB and ASME/ANSI, BS, JIS AS. Main levels of carbon steel: 4.8, 4.8, 6.8, 8.8, 10.9, and 12.9 grade, the main material of stainless steel SS201, SS304, SS316 and various kinds of special stainless steel.

The width range of our products can be divided into auto fasteners, mechanical fasteners, construction fasteners, power fasteners, railway fasteners, household electrical appliances fasteners and chemical fasteners,

We have first-class service team, so we can meet the different requests for a set of customers. We solemnly commitment, first-grade quality, timely delivery guaranteed

Reasonable price and service paramount, forward to the operation principle of quality first and customer first, pursuit of excellence to create first-class brand, our aim is brand promoting development, management promoting earnings, warmly greeting home and abroad new and old customers to communicate and cooperate to seek greater success and brilliant future.