Name: Super Duplex Fastener S32750 2507 ASTM A193 Duplex Steel Stub Bolt Nut
Brand: Yuhong Group Co.,Ltd
SKU: ASTM A193
Price: 500,000.00 USD
Availability: InStock

Yuhong Holding Group Co.,LTD

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Super Duplex Fastener S32750 2507 ASTM A193 Duplex Steel Stub Bolt Nut

Product Details:

Place of Origin:	CHINA
Brand Name:	YUHONG
Certification:	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number:	ASTM A193

Payment & Shipping Terms:

Minimum Order Quantity:	1 PC
Packaging Details:	PALLET,PLYWOOD CASE
Delivery Time:	7DAYS
Payment Terms:	L/C, T/T

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Detailed Product Description

Material:	Stainless Steel, Duplex Steel, Nickel Alloy, Copper Alloy	Type:	U‑Bolt, Stud Bolt, Nut, Washer, Pin, Diffractor Support
Size:	M6,M8,M12...	STANDARD:	ASTM,ISO,DIN,GB...

Super Duplex Fastener S32750 2507 ASTM A193 Duplex Steel Stub Bolt Nut

1. Product Overview
The product made from premium super duplex stainless steel UNS S32750 (1.4410, ASTM A182 F53), these full-thread stud bolts follow global industrial standards including ASTM A193 / ASTM A479 & ASME B18.2.1, serving as core fastening spare parts for high-pressure & heavy-corrosion industrial piping, pressure vessel flange connections.

2. Core Material & Superior Performance

S32750 is a top-grade super duplex stainless steel composed of 25%Cr-7%Ni-4%Mo-N dual-phase austenite+ferrite microstructure, bringing two core competitive edges vs ordinary 304/316 stainless fasteners:

Ultra High Mechanical Strength: Min. yield strength ≥550MPa, tensile strength ≥800MPa, around 2.5 times yield strength of 316L stainless steel, stable locking performance under high-pressure & alternating load working conditions, anti-loosening for long-term service.
Extreme Anti-Corrosion Capacity: Outstanding resistance to chloride-induced pitting, crevice corrosion & stress corrosion cracking(SCC); excellent adaptability to seawater, brine, acidic chemical medium, sour crude(H₂S-containing) working environment, widely approved for NACE MR0175 sour service standard.
Wide service temperature range: -50℃ ~ 315℃ continuous operating temperature, stable mechanical property without high-temperature softening or low-temperature brittle failure.

3. Manufacturing Standard: ASME B18.2.1 thread tolerance, precision CNC thread rolling for tight fit & uniform load distribution.

4. Main Application Industries

Offshore Platform & Marine Engineering: Seawater desalination plant, ship pipeline flange assembly, offshore seawater cooling system
Petrochemical & Chemical Processing: Acid/alkali chemical reactor, high-corrosion process pipeline fastening, sour oil & gas pipeline project
Power Industry: Coastal thermal power plant, flue gas desulfurization(FGD) equipment, nuclear auxiliary piping
Onshore Oilfield: Sour well piping, H₂S-containing crude transmission pipeline flange connection

Super Duplex Fastener S32750 2507 ASTM A193 Duplex Steel Stub Bolt Nut 0