Hot Dip Galvanised Stud Bolts is done by Hot Dip Galvanizing method of coating a steel with metallic zinc to prevent it from corroding. Preliminarily the object to be hot dipped galvanized is passed through a chemical clean to remove all rust, oil & surface scales. After the cleaning, the cleaning solutions is rinsed off the surface and the steel is taken further for coating..
The steel is then dipped into a bath of hot molten zinc which has been heated to a temperatur eof 460 Deg Celcius. The steel substrate is then removed from the bath and allowed to cool in a quenching tank. When the substrate is colled, the zinc coating is metallurgically bonded to the steel. High tensile fasteners like B7/2H, Grade 8.8, 10.9 & 12.9 Fasteners are commonly Hot Dipped Galvanized.
Hot-dip galvanizing (HDG) is one of the oldest and most commenly used method of protecting steel fasteners from corrosion.
HDG coating is relatively maintainence-free and provides excellent corrosion protection to steel structures for 50-70 years in most atmospheric environments (industrial, urban, marine & rural).
HDG provides two types of corrosion protection: barrier and galvanic (cathodic). It protects steel by acting as a semi-impermiable barrier to the environmental elements that cause corrosion.
Hot Dip Galvanizing Technical information
Further, because zinc is more reactive that steel, the zinc galvanized coating "sacrifies" or corrodes first, protecting the steel substrate. The rate of corrosion of zinc is atleast 10 times slower than that of steel, thus a thin coating of zinc can protect steel for long time.
Hot-dip galvanizing process starts with carefully cleaning the fastener surface and remove organic contaminants like dirt, grease or oil. Scale and rust are removed by pickling it in a dilute solution of heated sulfuric acid or an ambient temperature hydrochloric acid solution. The fasteners then go through another clean water rinse.
After thoroughly cleaning, the parts are dipped in a flux tank typically containing an aqueous solution of zinc ammonium chloride. this fluxing removes oxides and prevent further oxides from forming on the steel surface prior to galvanizing. fluxing also promotes bonding of the zinc to the steel surface.
Tha galvanizing phase of the process requires that the fasteners are completely immersed in a molten bath consisting of a minimum of 98% pure zinc at a temperature between 4600C to 5250C. After slowly withdrawing the parts from the molten zinc is still liquid, to remove excess zinc. the parts are then either air or water cooled to solidify the zinc and to permit handling.
Savoy Piping Inc. manufacturer & Supply almost all grades of fasteners with such Hot Dip Galvanised Coatings.:
|Stud Bolts Size Range||3/8" to 4" Diameter (Imperial & Standard) .|
|Stud Bolts Types||All Thread, Double End, Single End|
|Stud Bolts Industry Standards||ANSI – American National Standards Institute: ANSI B 18.2.4 2M, ANSI B 28.2.4 1M
DIN: DIN 934, DIN 970
UTS – Unified Thread Standard: UNC, UNF, UNEF, UNS, NPT, NPTF
ISO – International Organization for Standardization: ISO 4032, ISO 4033
|Stud Bolts Specification||ASTM A193 / ASME SA193 / ASTM A320 / ASME SA320|
|Stud Bolts Grades||Carbon Steel: B7, B7M, L7
Stainless Steel:B8, B8 CL2, B8M, B8M CL2, B16
Exotic Alloys: A20, 17-4PH, Monel, Inconel, Incoloy, Hastelloy
|Stud Bolts Surface Coating|
|Stud Bolts Packaging||Cartoon Box / Wooden Pallet / Wooden Box / Thread Protector|
we are supplier of Hot Dip Galvanised Stud Bolts to Mexico, Angola, Bulgaria, Italy, Gambia, Afghanistan, Trinidad & Tobago, Macau, Hungary, India, Mongolia, Brazil, Denmark, Greece, Tunisia, Tibet, New Zealand, Ghana, Belarus, Thailand, Portugal, Finland, Chile, Estonia, United States, Zimbabwe, Ireland, Austria, Kuwait, Slovakia, Malaysia, South Africa, Indonesia, Bahrain, Iraq, Belgium, Azerbaijan, Romania, Croatia, Czech Republic, Nigeria, Bhutan, Bolivia, Spain, Switzerland, Namibia, Netherlands, Australia, Yemen, Peru, Kenya, Taiwan, Saudi Arabia, Morocco, Colombia, Oman, United Kingdom, Norway, Chile, Israel, Costa Rica, Lithuania, Philippines, Iran, Ecuador, South Korea, Kazakhstan, China, Egypt, Russia, Sweden, Venezuela, Jordan, Libya, Hong Kong, Japan, Gabon, Serbia, Algeria, Lebanon, Qatar, Singapore, Vietnam, Sri Lanka, France, Nepal, Ukraine, Argentina, Canada, Poland, Germany, United Arab Emirates, Turkey, Puerto Rico, Nigeria, Bangladesh
We are Suppliers of Hot Dip Galvanised Stud Bolts to Kanpur, Faridabad, Navi Mumbai, Caracas, Visakhapatnam, Moscow, Algiers, Jakarta, Haryana, Noida, Mumbai, Seoul, Surat, Coimbatore, Jamshedpur, Singapore, Kolkata, Pimpri-Chinchwad, Mexico City, Manama, Los Angeles, Istanbul, Ahmedabad, Bangkok, Madrid, Petaling Jaya, Muscat, Ludhiana, Riyadh, Ankara, Dallas, Chennai, New York, Port-of-Spain, Thane, Kuala Lumpur, Santiago, Colombo, Vadodara, Abu Dhabi, Baroda, Indore, London, Vung Tau, Granada, Nashik, Edmonton, Ernakulam, Hyderabad, Gurgaon, Kuwait City, New Delhi, Lahore, Bogota, Al Jubail, Sydney, Pune, Perth, Houston, Courbevoie, Rajkot, Ho Chi Minh City, Cairo, Toronto, Ahvaz, Howrah, La Victoria, Al Khobar, Gimhae-si, Sharjah, Thiruvananthapuram, Dubai, Tehran, Busan, Rio de Janeiro, Jaipur, Ulsan, Bengaluru, Dammam, Chandigarh, Geoje-si, Karachi, Jeddah, Secunderabad, Calgary, Brisbane, Nagpur, Lagos, Melbourne, Atyrau, Ranchi, Hong Kong, Bhopal, Hanoi, Milan, Chiyoda, Montreal, Doha, AberdeenFor a Standard or Special Fastener, we are at your service! We specialize in Xylan Coated Stud Bolts, those made from Stainless Steel and Non-Ferrous Alloys. Look to Savoy Piping Inc. for fine Products and Reliable Information. Contact us today for All your Fasteners Need