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Duplex S31050 1.4466 Duplex Stainless Steel Fasteners ASME 1/4" - 5" Stud Bolt

Zhengzhou Huitong Pipeline Equipment Co.,Ltd.

Duplex S31050 1.4466 Duplex Stainless Steel Fasteners ASME 1/4" - 5" Stud Bolt

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Brand Name : HT

Model Number : ASME 1/4"~5" Stud Bolt Duplex S31050(1.4466) Duplex Stainless Steel Fasteners

Certification : ISO9001

Place of Origin : China

MOQ : 1 pcs

Price : USD 1000/piece

Payment Terms : L/C,T/T, Western Union

Supply Ability : 1000 pcs per month

Delivery Time : 30-35 working days

Packaging Details : wooden case, wooden pallet

Product Type : bolt nut washer

Name : ASME 1/4"~5" Stud Bolt Duplex S31050(1.4466) Duplex Stainless Steel Fasteners

Size : M6-M100

Finish : Cold galvanizing, Hot-dip Galvanizing, PTFE, Zinc Nickel, Black coating, Plain

Standard : DIN931 DIN933 DIN912 DIN934 DIN125 DIN127

Material : Nickel alloy/stainless steel/duplex stainless

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ASME 1/4"~5" Stud Bolt Duplex S31050(1.4466) Duplex Stainless Steel Fasteners


1.DIN 976-1 - 2002 Stud bolts - Part 1: Metric thread


DIN 976-1 - 2002 Stud bolts - Part 1: Metric thread


2.Why stud is used instead of bolts?


Studs provide the ability to obtain much more accurate torque values because the studs don't twist during tightening as do bolts. Because the studs remain stationary during nut tightening, the studs stretch in one axis alone, providing much more even and accurate clamping forces.


3.Bolts and Nuts for flanged connections

Types of Bolts

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.

Stud Bolts general

The quantity of bolts for a flange connection will be given by the number of bolt holes in a flange, diameter and length of bolts is dependent of flange type and Pressure Class of flange.

Stud Bolt length are defined in ASME B16.5 standard. The length in inches is equal to the effective thread length measured parallel to the axis, from the first to the first thread without the chamfers (points). First thread is defined as the intersection of the major diameter of the thread with the base of the point.



Notes:

  • The length of metric Stud Bolts measured parallel to axis, is the distance from each Stud Bolt, including the point.
  • To allow the use of hydraulic tensioning equipment, larger dimension studs shall be often one diameter longer than "standard". That bolts to have plastic end cap protection.

Threads of Stud Bolts

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.

Standard Thread Pitches

  • Coarse thread series (UNC/UNRC) is the most widely used thread system and applied in most of the screws, bolts and nuts. Coarse threads are used for threads in low strength materials such as iron, mild steel, copper and softer alloy, aluminium, etc.. The coarse thread is also more tolerant in adverse conditions and facilitate quick assembly.
  • Fine thread series (UNF/UNRF) is commonly used in precision applications and in there where require a higher tensile strength than the coarse thread series.
  • 8 - Thread series (8UN) is the specified thread forming method for several ASTM standards including A193 B7, A193 B8/B8M, and A320. This series is mostly used for diameters one inch and above.

Product Tags:

double ended stud

      

duplex steel fasteners

      
China Duplex S31050 1.4466 Duplex Stainless Steel Fasteners ASME 1/4" - 5" Stud Bolt wholesale

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