ASTM A403 WP304 Square Puddle Flange

ASTM A403 WP304 Square Puddle Flange

The integrity of water tank systems is essential for industries, municipalities, and agricultural sectors where efficient water storage is critical. The ASTM A403 WP304 square puddle flange plays a vital role in ensuring secure and leak-free pipe connections in concrete structures.

Designed for durability and corrosion resistance, this flange provides reliable sealing where pipes pass through water tanks and walls. As a result, it enhances system performance and ensures long-term structural protection.

Mesta Inc., a global leader in high-quality water tank components, supplies robust ASTM A403 WP304 square puddle flanges across Kazakhstan, India, UAE, Saudi Arabia, and Uzbekistan. With a commitment to quality and precision, Mesta Inc. delivers dependable solutions for modern infrastructure and water management systems.

ASTM A403 WP304 Square Puddle Flange
150 mm flange

Puddle Flange Specification

Size 1/2" to 48"
Connect Type Flat Face / Raised Face / RTJ
Production Technique Forged / Heat Treated / Machined
Coating
  • Zinc Plated
  • Oil Black Paint
  • Anti-rust Paint
Pressure Rating Class 150 to Class 2500
Equipment
  • Press Machine
  • Bending Machine
  • Pushing Machine

Size

1/2" to 48"

Connect Type

Flat Face / Raised Face / RTJ

Production Technique

Forged / Heat Treated / Machined

Coating

  • Zinc Plated
  • Oil Black Paint
  • Anti-rust Paint

Pressure Rating

Class 150 to Class 2500

Equipment

  • Press Machine
  • Bending Machine
  • Pushing Machine

Stainless steel puddle flange weight chart

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O
D		 NPS Sch
10		 Sch
30		 Sch
20		 Sth.
Wall		 Sch
60		 Sch
120		 Extra
Strong		 Sch
40		 Sch
160		 Sch
80		 Sch
100		 Sch
140		 Double
Extra
Strong
0.840 1/2” 0.674 0.622 0.546 0.622 0.464 0.546 0.252
1.050 3/4” 0.884 0.824 0.742 0.824 0.612 0.742 0.434
1.315 1” 1.097 1.049 0.957 1.049 0.815 0.957 0.599
1.660 1.1/4” 1.442 1.380 1.278 1.380 1.160 1.278 0.896
1.900 1.1/2” 1.682 1.610 1.500 1.610 1.338 1.500 1.100
2.375 2” 2.157 2.067 1.939 2.067 1.687 1.939 1.503
2.875 2.1/2” 2.635 2.469 2.323 2.469 2.125 2.323 1.771
3.500 3” 3.260 3.068 2.900 3.068 2.624 2.900 2.300
4.000 3-1/2” 3.760 3.548 3.364 3.548 3.364 2.728
4.500 4” 4.260 4.026 3.624 3.826 4.026 3.438 3.826 3.152
5.563 5” 5.295 5.047 4.563 4.813 5.047 4.313 4.813 4.063
6.625 6” 6.357 6.065 5.501 5.761 6.065 5.187 5.761 4.897
8.625 8” 8.329 8.071 8.125 7.981 7.813 7.187 7.625 7.981 6.813 7.625 7.437 7.001 6.875
10.750 10” 10.420 10.136 10.250 10.020 9.750 9.062 9.750 10.020 8.500 9.562 9.312 8.750 8.750
12.750 12” 12.390 12.090 12.250 12.000 11.626 10.750 11.750 11.938 10.126 11.374 11.062 10.500 10.750
42.000 42” 41.250 41.000

Carbon steel puddle flange pressure rating

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Temperature (°C)
 Class
Class 600 Class 300 Class 150 Class 900 Class 400 Class 2500 Class 1500
-29 - 38 103.4 51.7 19.8 155 68.9 431 259
50 103.4 51.7 19.5 155 68.9 431 259
100 103.0 51.5 17.7 155 68.7 429 258
150 100.3 50.2 15.8 151 66.8 418 251
200 97.2 48.6 13.8 146 64.8 405 243
250 92.7 46.3 12.1 139 61.7 386 232
300 85.7 42.9 10.2 129 57.0 357 214
325 82.6 41.4 9.3 124 55.0 344 207
350 80.0 40.0 8.4 120 53.4 334 200
375 75.7 37.8 7.4 114 50.4 315 189
400 69.4 34.7 6.5 104 46.3 290 174
425 57.5 28.8 5.5 86.3 38.4 240 144
450 46.0 23.0 4.6 69.0 30.7 192 115
475 34.2 17.1 3.7 51.3 22.8 142 85.4
500 23.2 11.6 2.8 34.7 15.4 96.5 57.9
538 11.8 5.9 1.4 17.7 7.9 49.2 29.5

What is ASTM A403 WP304 Square Puddle Flange?

ASTM A403 WP304 square puddle flange is a specialized fitting used to connect pipes to water tanks or vessels while ensuring a watertight seal. It prevents leakage at pipe entry or exit points.

Made from WP304 stainless steel, it offers excellent corrosion resistance and durability in water-based environments.

The square design distributes pressure evenly, providing a stronger and more stable seal compared to traditional round flanges.

Key Benefits

  • Durability: Resistant to corrosion and degradation.
  • Leak Prevention: Maintains secure water-tight sealing.
  • High Pressure Resistance: Performs under fluctuating pressure.
  • Enhanced Fit: Square design ensures stability.
  • Customization: Available in various sizes and designs.

Why Choose Mesta Inc.?

  • International Quality Standards: Reliable manufacturing processes.
  • Global Presence: Serving Kazakhstan, India, UAE, Saudi Arabia, and Uzbekistan.
  • Industry Expertise: Proven solutions for diverse environments.
  • Custom Engineering: Tailored flange designs.

Applications Across Industries

The ASTM A403 WP304 square puddle flange is widely used in:

  • Water Treatment Plants: Ensures contamination-free systems.
  • Agricultural Irrigation: Supports efficient water distribution.
  • Industrial Water Systems: Handles high-pressure environments.
  • Oil and Gas Industry: Maintains secure water storage systems.

How to Choose the Right Flange

  • Material Compatibility: Use WP304 stainless steel for corrosion resistance.
  • Pipe Size Matching: Select appropriate dimensions.
  • Pressure Conditions: Ensure suitability for operating pressure.
  • Environmental Factors: Consider climate and application conditions.

Performance Across Regions

These flanges are widely used across Kazakhstan, India, UAE, Saudi Arabia, and Uzbekistan due to their ability to perform reliably under varying environmental and industrial conditions.

From municipal water systems to industrial applications, Mesta Inc.'s flanges ensure long-term efficiency and durability.

ASTM A403 WP304 square puddle flanges are essential for modern water infrastructure systems, ensuring leak-free and durable installations.

Mesta Inc. delivers high-quality, customizable solutions trusted worldwide for performance and reliability.

Get in Touch

Phone Number

+91 22 2386 0222 / +91 22 2386 0223
+91 22 67492118 / +91 22 6636 2118
+919820007728
+919867899897
+919819546861

Email

sales@mestainc.com
nms@mestainc.com
export@mestainc.net

Registered office

Ground Floor, Shop No.2, Rangawala bldg., 58 Islampura Street, Near Alankar Cinema, Mumbai-400 004, India

Factory address

Plot No L 85, MIDC Taloja Industrial Area, Dist.Raigad, Navi Mumbai-410 208, India

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