ASTM A403 WP304L 1.4307 End Cap Stainless Steel Buttweld Fitting

Overview:

WP304L end caps are critical components used in various piping systems, particularly in industries where corrosion resistance and durability are essential. Made from WP304L stainless steel, these end caps are designed to provide a secure closure at the end of pipes, preventing the escape of fluids and ensuring structural integrity.

The “304L” designation indicates that this alloy has a lower carbon content compared to standard 304 stainless steel, enhancing its weldability and reducing the risk of carbide precipitation during welding. This makes WP304L suitable for high-temperature applications and environments exposed to corrosive substances.

These end caps offer excellent resistance to oxidation and corrosion, making them ideal for use in chemical processing, food and beverage, pharmaceutical, and marine applications. The material is also non-magnetic and exhibits good strength and ductility, contributing to its versatility in different conditions.

Manufactured through processes like hot or cold working, these end caps come in various sizes and wall thicknesses to accommodate different piping needs. They can be used in both welded and threaded connections, ensuring a tight fit in various installation scenarios. Additionally, WP304L end caps comply with industry standards, ensuring quality and reliability.

In terms of maintenance, these caps require minimal care due to their robust nature, although regular inspections can help identify any signs of wear or corrosion over time. Their longevity and durability not only reduce the need for frequent replacements but also contribute to the overall efficiency and safety of the piping system.

Specification:

Standard	ASTM A403/ASME SA403
Material	WP304L; 1.4307
Type	Buttweld Cap
Connection	Welding
Size	1/2"-48"(DN15-DN1200) or custom size
Thickness	SCH10S-XXS(2-60mm)
Surface	Sand Blasting
Packing	Plywood case/Pallet

Chemical Composition:

Grade	C	Mn	P	S	Si	Ni	Cr
WP304L	0.03 max	2.0 max	0.045 max	0.03 max	1.00 max	8.0-12.0	18.0-20.0

Mechanical Properties:

Grade	Yield Strength, min, ksi [MPa]	Tensile Strength, min, ksi [MPa]	Elongation %
WP304L	25(170)	70(485)	28

Dimension for BW Cap:

Nominal Size		Out Diameter at Bevel (mm)	Length (mm)		Limiting Wall Thickness for Length E (mm)
DN	NPS	O.D.	E	E1
15	1/2	21.3	25	25	4.57
20	3/4	26.7	25	25	3.81
25	1	33.4	38	38	4.57
32	1 1/4	42.2	38	38	4.83
40	1 1/2	48.3	38	38	5.08
50	2	60.3	38	44	5.59
65	2 1/2	73.0	38	51	7.11
80	3	88.9	51	64	7.62
90	3 1/2	101.6	64	76	8.13
100	4	114.3	64	76	8.64
125	5	141.3	76	89	9.65
150	6	168.3	89	102	10.92
200	8	219.1	102	127	12.7
250	10	273.0	127	152	12.7
300	12	323.8	152	178	12.7
350	14	355.6	165	191	12.7
400	16	406.4	178	203	12.7
450	18	457.0	203	229	12.7
500	20	508.0	229	254	12.7
550	22	559.0	254	254	12.7
600	24	610.0	267	305	12.7
650	26	660.0	267	...	...
700	28	711.0	267	...	...
750	30	762.0	267	...	...
800	32	813.0	267	...	...
850	34	864.0	267	...	...
900	36	914.0	267	...	...
950	38	965.0	305	...	...
1000	40	1016.0	305	...	...
1050	42	1067.0	305	...	...
1100	44	1118.0	343	...	...
1150	46	1168.0	343	...	...
1200	48	1219.0	343	...	...
GENERAL NOTE: The shape of these caps shall be ellipsoidal and shall conform to the requirements given in the ASME Boiler and Pressure Vessel Code. NOTES: (1) Length E applies for thickness not exceeding that given in column “Limiting Wall Thickness for Length, E.” (2) Length E1 applies for thickness greater than that given in column “Limiting Wall Thickness for Length, E” for NPS 24 and smaller. For NPS 26 and larger, length E1 shall be by agreement between the manufacturer and purchaser.

Application:

1. Piping Systems: Used to seal the ends of pipes in chemical, oil, and gas industries, ensuring integrity and preventing leaks.

2. Food Processing: Suitable for food handling and processing systems, where hygiene and corrosion resistance are critical.

3. Pharmaceutical Industry: Utilized in manufacturing processes where cleanliness and low nickel content are essential to prevent allergic reactions.

4. Brewery Equipment: Ideal for brewing systems, where it helps maintain the quality of beer.

5. Marine Applications: Used in marine environments due to its resistance to saltwater corrosion.

6. Construction: Applications in structural components that require durability and resistance to the elements.