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High Temperature ASME SA182 F321H Stainless Steel Flange with 100% Inspection UT/MT/PT

High Temperature ASME SA182 F321H Stainless Steel Flange with 100% Inspection UT/MT/PT

High Temperature Stainless Steel Flanges

ASME SA182 Stainless Steel Flanges

High Temperature pressure vessel flange

Place of Origin:

China

Brand Name:

YUHONG

Certification:

ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008

Model Number:

ASTM A182 F321H

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Product Details
Face Type:
Raised Face/Flat Face/RTJ/LM/LF
Certifications:
ASME B16.5, ASTM A182
Material:
Stainless Steel
Corrosion Resistance:
High
Sealing Surface:
RF
Specification:
B16.5 B16.9 API605
Structure:
Flanges
Connection:
Welding
Flange Face Type:
Raised Face
Highlight:

High Temperature Stainless Steel Flanges

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ASME SA182 Stainless Steel Flanges

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High Temperature pressure vessel flange

Payment & Shipping Terms
Minimum Order Quantity
1 set
Price
Negotiable
Packaging Details
Ply wooden Case/ Iron Structural Case
Delivery Time
15-30 Days
Payment Terms
L/C,T/T
Supply Ability
According to Client's Request
Product Description
High Temperature Stainless Steel Flanges ASME SA182 F321H 100% Inspection UT/MT/PT
Premium Stainless Steel Flanges for Extreme Heat & Pressure Applications
About YUHONG

YUHONG Group is a globally recognized manufacturer specializing in high-performance flanges and pressure vessel components for critical industrial applications. With ISO 9001, ASME, and PED certifications, we deliver engineered solutions for the most demanding operating conditions.

Why Choose YUHONG?
25+ Years in high-temperature flange manufacturing
Full material traceability with Mill Test Certificates
Custom fabrication for unique project requirements
Global supply chain with fast lead times
Product Overview

YUHONG's ASME SA182 F321H Flanges are specifically engineered for high-temperature service in:

• Petrochemical processing
• Power generation systems
• Refinery applications
• Aerospace components
• Nuclear power plants

These flanges feature stabilized titanium composition for superior resistance to intergranular corrosion at elevated temperatures (up to 816°C/1500°F).

Key Features & Benefits
High-Temperature Performance: Stabilized with titanium for carbide precipitation resistance
Enhanced Strength: Maintains structural integrity under thermal cycling
Full NDT Inspection: 100% UT (Ultrasonic), MT (Magnetic Particle), and PT (Liquid Penetrant) tested
Multiple Standards: Compliant with ASME B16.5, B16.47, and custom specifications
Corrosion Resistant: Excellent performance in oxidizing and mildly reducing environments
Technical Specifications
Material & Mechanical Properties
Property Value Standard
Material Grade ASME SA182 F321H (Ti-stabilized) ASME BPVC Sec. II
Tensile Strength ≥ 515 MPa (75 ksi) ASTM A370
Yield Strength ≥ 205 MPa (30 ksi) ASTM A370
Elongation ≥ 30% ASTM A370
Hardness ≤ 90 HRB ASTM E18
Max Operating Temp 816°C (1500°F) ASME B16.34
Dimensional Specifications
Parameter Range
Size Range 1/2" to 48" (DN15 to DN1200)
Pressure Class Class 150 to Class 2500
Face Types RF, FF, RTJ (or custom)
Surface Finish 3.2 μm Ra or better
Non-Destructive Testing (NDT)
Test Method Standard Coverage
UT (Ultrasonic) ASTM A388 100% volume inspection
MT (Magnetic Particle) ASTM E709 100% surface examination
PT (Liquid Penetrant) ASTM E165 100% surface inspection
Applications
✅ FCCU and hydrocracker units
✅ Steam headers and superheaters
✅ Heat exchanger systems
✅ High-temperature piping
✅ Boiler and pressure vessel connections
Quality Assurance

YUHONG implements strict quality control throughout manufacturing:

• Raw material verification
• In-process dimensional checks
• Final NDT inspection
• Hydrostatic testing available
• Full documentation package
Ordering Information

Customization Options Available:

High Temperature ASME SA182 F321H Stainless Steel Flange with 100% Inspection UT/MT/PT 0
High Temperature ASME SA182 F321H Stainless Steel Flange with 100% Inspection UT/MT/PT 1
• Special sizes outside standard range
• Unique facing requirements
• Heat treatment variations
• Special marking and packaging
Ratings& Review

Overall Rating

4.0
Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings
5 stars
33%
4 stars
33%
3 stars
33%
2 stars
0%
1 stars
0%

All Reviews

John
United States Dec 9.2025
We purchased this heat exchanger for a critical amine service in our Texas plant. The ASME VIII-1 stamp gave us the confidence we needed for regulatory compliance. Upon arrival, our third-party inspector did a thorough check—he was impressed by the weld quality and the precise thickness of the SA516 Gr485 shell. It's been running continuously for six months now with zero issues. The documentation package (including material test reports and NDT reports) was complete and well-organized. Definitely a supplier we'll consider for future expansions.
T
Tanaka
Japan Jul 26.2025
The QA/QC system is comparable to Japanese pressure vessel manufacturers. We requested additional UT testing on all Category A joints, and they accommodated without delay. The external surface preparation (Sa2.5 blasting + epoxy coating) was executed perfectly for our coastal installation. The 200,000L capacity with such a compact footprint demonstrates excellent engineering optimization. 納期も守られました。Will consider for future LNG pre-treatment projects.
V
V*v
Russian Federation Jul 13.2025
The vessel is designed for severe cold climate—MDMT rating of -45°C suits our Siberian conditions perfectly. They provided full GOST-R certification package in addition to ASME, which saved us significant time on customs clearance. The 200 cubic meter volume is ideal for our hydrocracking pilot plant. Quality of nozzles and flanges is robust—no issues with thermal cycling. Доставка через Владивосток прошла гладко.

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