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In Petro and chemical industry for flange connections Stud Bolts and Hex Bolts are used. The Stud Bolt is a threaded rod with 2 heavy hexagon nuts, while the Hex Bolt has a head with one nut. Nuts and head are both six sided.
Bolts threading are defined in ASME B1.1 Unified Inch Screw Threads, (UN and UNR Thread Form). The most common thread is a symmetrical form with a V-profile. The included angle is 60°. This form is widely used in the Unified thread (UN, UNC, UNF, UNRC, UNRF) form as the ISO / metric threads.
The advantage of a symmetrical threads is that they are easier to produce and inspect compared with non-symmetrical threads. These are typically used in general-purpose fasteners.
Thread series cover designations of diameter/pitch combinations that are measured by the number of threads per inch (TPI) applied to a single diameter.
Threaded rods detail：
Length: 10- 6000mm
Material: ( low, medium, high) carbon steel, stainless steel.
Property Class: 4.8-12.9 A2-70 304 316
Surface treatment: PLN, ZP, YZ, BLK, HDG
Packing: 25KG per box or bag + strong wooden pallets
Delivery: 30-40 Days After Contract Signed
Term of Payment: 1. L/C At Sight, 2. T/T with 30% Deposit, 70% Payable Against B/L Copy
Custome-made are welcome!
Head Style:No Head
Finish:According to Customers′ Requirements
Double End Bolt
Display Tech:5.8" TFT LCD (Liquid Crystal Display) + LED Lamp
Lens:F=190mm Projection Lens 5lens(Manual Focusing)
Lamp:120W LED Lamp About 50, 000 Hours Life
Power/Voltage:AC90V~240V, 50-60 Hz
Format:4: 3 / 16: 9 Switch
Acceptable payment term and way?
T/T,L/C, T/T + L/C,
Acceptable price term？
FOB CNF CIF DDU CPT
Do you accept OA payment terms?
Yes, sure, but it normally depending on the order value
Do you have QC team?
Yeah, sure, our QC team is very important, they will keep the quality control for our products.
What is the validity of your quotation?
Normally 7 days.
What is your advantage?
24 hour quick response /Customer oriented/ Credit foremost/ Top quality Excellent
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