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304/316L Stainless Steel Plate Flat Flange – Corrosion-Resistant Flat Face for Low-Pressure HVAC & Municipal Piping

304/316L Stainless Steel Plate Flat Flange – Corrosion-Resistant Flat Face for Low-Pressure HVAC & Municipal Piping

MOQ: 100KGS
Price: Negotation
Standard Packaging: They are usually packed in conventional export wooden cases.
Delivery Period: 2-10 work days
Payment Method: L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Capacity: 2000tons/per month
Detail Information
Place of Origin
China
Brand Name
Yuhao
Certification
ISO, API, BV, CE ...
Model Number
flanges
Material:
304, 304L, 316, 316L
Application:
Connection, Decoration, Oil And Gas, Automative, Shipbuilding, Construction
Standard:
ASTM, AISI, GB, JIS
Package:
Standard Seaworthy Packagel, Wooden Cases...
Connection:
Welding
Pressure:
Class150/300/600/9001500/2500
Type:
Pipe Fitting
Shape:
Round Shape
Size:
DN15-DN2000
Product Description

Stainless Steel Plate Flat Flange



►Product Description

Stainless Steel Plate Flat Flange is a reliability-focused, cost-effective component designed for low-pressure piping systems in HVAC, municipal and light industrial fields. Made from premium 304/316L stainless steel, this plate flat flange boasts a flat face and compact profile, ensuring strong corrosion resistance and easy installation for pipe and equipment joints.

Its flat face design creates a tight seal with gaskets, effectively preventing leakage in low-pressure media transfer. Unlike slip-on flanges, the stainless steel plate flat flange is directly welded to pipes or equipment, simplifying installation procedures and cutting down project costs for basic pipeline setups.

Our stainless steel plate flat flanges meet ANSI/ASME B16.5, DIN 2627 and EN 1092-1 standards, with a full range of sizes, 150–300 pressure classes and surface finishes to match the specific needs of low-pressure HVAC, municipal and industrial projects.

304 stainless steel plate flat flanges are perfect for municipal water piping, HVAC systems and light manufacturing; 316L variants provide superior corrosion resistance for mild chemical processing, coastal and marine auxiliary pipelines.

Each stainless steel plate flat flange undergoes strict quality testing, including material composition checks, dimensional accuracy verification and surface defect inspections, ensuring seamless integration and long-term reliability in low-pressure operating conditions.

Widely used in municipal water systems, HVAC installations, light manufacturing and industrial auxiliary pipelines, this plate flat flange is favored for its reliability, affordability and ease of use, making it ideal for new builds and maintenance upgrades.

We offer both standard and custom stainless steel plate flat flanges, supported by professional technical guidance and competitive pricing, making us your trusted partner for low-pressure HVAC, municipal and industrial piping solutions.


►Product  Size

DN Pipe OD Connection Size Flange Thickness(mm)
C
Flagne ID
A B Flange OD Bolt Hole Circle Diameter A B
10 17.2 14 90 60 14 18 15
15 21.3 18 95 65 14 22.5 19
20 26.9 25 105 75 16 27.5 26
25 33.7 32 115 85 16 34.5 33
32 42.4 38 140 100 18 43.5 39
40 48.3 45 150 110 18 49.5 46
50 60.3 57 165 125 19 61.5 59
65 76.1 76 185 145 20 77.5 78
80 88.9 89 200 160 20 90.5 91
100 114.3 108 220 180 22 116 110
125 139.7 133 250 210 22 143.5 135
150 168.3 159 285 240 24 170.5 161
200 219.1 219 340 295 24 221.5 222
250 273 273 395 350 26 276.5 276
300 323.9 325 445 400 26 328 328
350 355.6 377 505 460 28 360 381
400 406.4 426 565 515 32 411 430
450 457 480 615 565 36 462 485
500 508 530 670 620 38 513.5 535
600 610 630 780 725 42 616.5 636


►Shot Shoot

304/316L Stainless Steel Plate Flat Flange – Corrosion-Resistant Flat Face for Low-Pressure HVAC & Municipal Piping 0

304/316L Stainless Steel Plate Flat Flange – Corrosion-Resistant Flat Face for Low-Pressure HVAC & Municipal Piping 1

304/316L Stainless Steel Plate Flat Flange – Corrosion-Resistant Flat Face for Low-Pressure HVAC & Municipal Piping 2


►FAQ

Q1: Delivery time?

A: 1- 7 days for small order.10- 20 days for big order.


Q2: Are you manufacturer or trading company?

A: We are not only manufacturer but also a trading company,we have more than 12years export experience.


Q3: What is your minimum order quantity?

A: The MOQ for each product is different, so it would be recommended to refer to the detail page of the product you are interested in. If you need further clarification, send me the product link, and I will reply as soon as possible.


Q4: Do you provide samples ? Is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.


Q5: How long is your production lead time?

A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.

products
PRODUCTS DETAILS
304/316L Stainless Steel Plate Flat Flange – Corrosion-Resistant Flat Face for Low-Pressure HVAC & Municipal Piping
MOQ: 100KGS
Price: Negotation
Standard Packaging: They are usually packed in conventional export wooden cases.
Delivery Period: 2-10 work days
Payment Method: L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Capacity: 2000tons/per month
Detail Information
Place of Origin
China
Brand Name
Yuhao
Certification
ISO, API, BV, CE ...
Model Number
flanges
Material:
304, 304L, 316, 316L
Application:
Connection, Decoration, Oil And Gas, Automative, Shipbuilding, Construction
Standard:
ASTM, AISI, GB, JIS
Package:
Standard Seaworthy Packagel, Wooden Cases...
Connection:
Welding
Pressure:
Class150/300/600/9001500/2500
Type:
Pipe Fitting
Shape:
Round Shape
Size:
DN15-DN2000
Minimum Order Quantity:
100KGS
Price:
Negotation
Packaging Details:
They are usually packed in conventional export wooden cases.
Delivery Time:
2-10 work days
Payment Terms:
L/C,D/A,D/P,T/T,Western Union,MoneyGram
Supply Ability:
2000tons/per month
Product Description

Stainless Steel Plate Flat Flange



►Product Description

Stainless Steel Plate Flat Flange is a reliability-focused, cost-effective component designed for low-pressure piping systems in HVAC, municipal and light industrial fields. Made from premium 304/316L stainless steel, this plate flat flange boasts a flat face and compact profile, ensuring strong corrosion resistance and easy installation for pipe and equipment joints.

Its flat face design creates a tight seal with gaskets, effectively preventing leakage in low-pressure media transfer. Unlike slip-on flanges, the stainless steel plate flat flange is directly welded to pipes or equipment, simplifying installation procedures and cutting down project costs for basic pipeline setups.

Our stainless steel plate flat flanges meet ANSI/ASME B16.5, DIN 2627 and EN 1092-1 standards, with a full range of sizes, 150–300 pressure classes and surface finishes to match the specific needs of low-pressure HVAC, municipal and industrial projects.

304 stainless steel plate flat flanges are perfect for municipal water piping, HVAC systems and light manufacturing; 316L variants provide superior corrosion resistance for mild chemical processing, coastal and marine auxiliary pipelines.

Each stainless steel plate flat flange undergoes strict quality testing, including material composition checks, dimensional accuracy verification and surface defect inspections, ensuring seamless integration and long-term reliability in low-pressure operating conditions.

Widely used in municipal water systems, HVAC installations, light manufacturing and industrial auxiliary pipelines, this plate flat flange is favored for its reliability, affordability and ease of use, making it ideal for new builds and maintenance upgrades.

We offer both standard and custom stainless steel plate flat flanges, supported by professional technical guidance and competitive pricing, making us your trusted partner for low-pressure HVAC, municipal and industrial piping solutions.


►Product  Size

DN Pipe OD Connection Size Flange Thickness(mm)
C
Flagne ID
A B Flange OD Bolt Hole Circle Diameter A B
10 17.2 14 90 60 14 18 15
15 21.3 18 95 65 14 22.5 19
20 26.9 25 105 75 16 27.5 26
25 33.7 32 115 85 16 34.5 33
32 42.4 38 140 100 18 43.5 39
40 48.3 45 150 110 18 49.5 46
50 60.3 57 165 125 19 61.5 59
65 76.1 76 185 145 20 77.5 78
80 88.9 89 200 160 20 90.5 91
100 114.3 108 220 180 22 116 110
125 139.7 133 250 210 22 143.5 135
150 168.3 159 285 240 24 170.5 161
200 219.1 219 340 295 24 221.5 222
250 273 273 395 350 26 276.5 276
300 323.9 325 445 400 26 328 328
350 355.6 377 505 460 28 360 381
400 406.4 426 565 515 32 411 430
450 457 480 615 565 36 462 485
500 508 530 670 620 38 513.5 535
600 610 630 780 725 42 616.5 636


►Shot Shoot

304/316L Stainless Steel Plate Flat Flange – Corrosion-Resistant Flat Face for Low-Pressure HVAC & Municipal Piping 0

304/316L Stainless Steel Plate Flat Flange – Corrosion-Resistant Flat Face for Low-Pressure HVAC & Municipal Piping 1

304/316L Stainless Steel Plate Flat Flange – Corrosion-Resistant Flat Face for Low-Pressure HVAC & Municipal Piping 2


►FAQ

Q1: Delivery time?

A: 1- 7 days for small order.10- 20 days for big order.


Q2: Are you manufacturer or trading company?

A: We are not only manufacturer but also a trading company,we have more than 12years export experience.


Q3: What is your minimum order quantity?

A: The MOQ for each product is different, so it would be recommended to refer to the detail page of the product you are interested in. If you need further clarification, send me the product link, and I will reply as soon as possible.


Q4: Do you provide samples ? Is it free or extra ?

A: Yes, we could offer the sample for free charge but do not pay the cost of freight.


Q5: How long is your production lead time?

A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.