PTFE is short for Polytetrafluoroethylene, a chemical applied to common bolting materials (such as B7 stud bolts) to provide corrosion and chemical resistance.
Normally when we talk about the PTFE coated on the stud bolt and other fasteners,we always refer to Teflon® and Xylan®.
PTFE coated studs have been used for many years within the bolting industry, especially in any application that requires corrosion resistance or in offshore applications.
While PTFE coated stud bolts (including Xylan coated studs bolts) have corrosion-resistant properties.
PTFE coating ,also Teflon is a fluorocarbonsolid, as it is a highmolecular weightcompound consisting wholly ofcarbonandfluorine. PTFE ishydrophobic: neither water nor water-containing substances wet PTFE, as fluorocarbons demonstrate mitigatedLondon dispersion forcesdue to the highelectronegativityof fluorine. PTFE has one of the lowest coefficients offrictionof any solid.
PTFE is used as anon-stick coatingfor hardware It is nonreactive, partly because of the strength ofcarbon–fluorine bonds, and so it is often used in containers and pipework for reactive and corrosive chemicals
PTFE Xylan Coated Stud Bolts, ASTM A320 L7M Xylan PTFE Coated Stud bolt
Surface:black,galvanized,HDG,blue. FluoroCarbon Coated
Whitford Quality Approved Coater Xylan 1070 Coated Stud Bolt, Xylan Coated Bolts, PTFE Fluorocarbon Coated A193 B7 Stud Bolt &A194 2H NUTS
Fluorcarbon coating-Surface Coatings XYLAN 1070. XYLAN 1424.
Diameter:1/4″~3 3/4″
Length:20mm~6000mm(usually 12 feet)
Grade :B7
Standard: M6-M100
Material: ASTM A193 B7.
Surface finished: PTFE Xylan Coated.
Standard: ANSI B18.1.1.
Stud bolts, a term used for cut-to-length all thread rod, are used for: bolting together flanges, anchor bolting, as well as general fastening.
A193 B7 – This is the most common grade for which stud bolts are produced. A193 B7 is a Chrome-moly, Alloy steel that is made to AISI 4140/4142, and it is quenched and tempered.
Xylan coating because of its reputation in the Oil and Gas Industry as one of the premium coating providers for bolts and nuts. As a Qualified Approved Coater, our PTFE coated bolts and nuts have been used in various countries in South America,southeast Asia.Middle east.
COATING/PLATING OPERATING TEMPERATURES
- Cadmium Electroplating
– High Service Temp: 608o F.
– Low Service Temp: N/A; solid below 607o F. - Zinc or Zinc-Nickel Electroplating
– High Service Temp: 788o F.
– Low Service Temp: N/A; solid below 788o F. - Hot Dip Galvanizing
– High Service Temp 800o F.
– Low Service Temp: N/A; solid below 800o - DuPont Teflon® 857G Series PTFE
– High Service Temp: 500o F.
– Low Service Temp: N/A - Xylan® 1400 Series PTFE
– High Service Temp: 450o F. continuous, 550o F. intermittent
– Low Service Temp: -320o F. - Xylar 2® Cermet
– High Service Temp: up to 1,000o F.
– Low Service Temp: N/A - Zinc Phosphate
– Ambient Temperature
How to order our PTFE coated ASTM A193 B7 Stud bolt with 2 A194 2H hex nuts?
1). STUD BOLT 1-3/4″; 8UN X 300L;
WITH 2 NUTS; BOLT MAT: A193- B7;
NUT MAT.: A194-2H
Surface:PTFE Blue coating
QTY 77 SETS
2).1-1/4″ X 230 MM LONG STUD BOLT + 2NUTS QTY 90 SETS
– STUD A193 B7- NUTS A194 2H Standard:ASME ANSI B18.31.2 / ANSI B18.2.2
THDD L= 230 MM (BLUE) PTFE COATED.