Is the Stainless Steel Symmetrical Reducer EN 10253-4A supplied with an EN 10204 3.1 material certificate for full traceability?

Yes. The Stainless Steel Symmetrical Reducer EN 10253-4A is supplied with an EN 10204 3.1 material certificate, providing full traceability and quality assurance.

Can the Stainless Steel Symmetrical Reducer EN 10253-4A be supplied in custom diameters or ASME-compliant versions for specific project requirements?

Yes. Stainless Steel Symmetrical Reducer EN 10253-4A Format can be supplied in custom diameters and in ASME-compliant versions to meet specific project requirements. Beyond the standard EN 10253-4 dimensions, the manufacturer offers tailored solutions including reductions exceeding two DN sizes and ASME-compatible reducers. Products are produced from seamless stainless steel (AISI 321 or AISI 316Ti), supplied with EN 10204 3.1 material certificates for traceability and quality assurance, and are suitable for demanding pressure applications (working pressures typically 61–185 bar depending on diameter; type A fittings may have slightly lower pressure resistance as per EN 10253 correction factors). Complementary butt-weld fittings (45° and 180° elbows, eccentric reducers, tees, end caps) are also available to support customized pipeline designs. For exact pressure ratings, dimensional limits, and ASME equivalence for your project, consult the supplier with your required diameters, schedule/thickness, and applicable code references.

Stainless Steel Symmetrical Reducer EN 10253-4A

Additional information

Material	SS – stainless steel
Standard length [m]	10

The symmetrical concentric reducer for butt welding, manufactured from seamless stainless steel pipes in compliance with EN 10253-4, is a reliable solution for demanding pressure applications. Supplied with an EN 10204 3.1 material certificate, it ensures full traceability and quality assurance, making it a trusted choice across various industrial sectors. Widely applied in the construction of pipelines and installations, it also serves as a key component in welded ends for metal and rubber hoses, as well as in fittings and valve assemblies. Available in stainless steel grades AISI 321 and AISI 316Ti, the reducer offers working pressures ranging from 61 to 185 bar, depending on the diameter. For type A fittings, the pressure resistance may be slightly lower than that of a straight pipe of the same dimensions, with exact values determined using the correction factors specified in EN 10253 standards. Beyond standard sizes, customized solutions are offered, including reductions exceeding two DN sizes, ASME-compliant reducers, and a wide range of complementary butt-weld fittings such as 45° and 180° elbows, eccentric reducers, tees, and end caps. This versatility, combined with high durability and corrosion resistance, makes the product an excellent choice for industries seeking long-lasting, safe, and efficient pipeline components.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
TK-RS-026-021-SS	Reduction symmetrical 26.9x2.0 / 21.3x2.0, AISI 321, EN 10253-4A	-	160	In stock	Enquiry
TK-RS-026-021-SS316TI	Reduction symmetrical 26.9x2.0 / 21.3x2.0, AISI 316Ti, EN 10253-4A	-	167	In stock	Enquiry
TK-RS-033-021-SS	Reduction symmetrical 33.7x2.6 / 21.3x2.3, AISI 321, EN 10253-4A	-	177	In stock	Enquiry
TK-RS-033-021-SS316TI	Reduction symmetrical 33.7x2.6 / 21.3x2.3, AISI 316Ti, EN 10253-4A	-	185	In stock	Enquiry
TK-RS-033-026-SS	Symmetrical reduction 33.7x2.6 / 26.9x2.3, AISI 321, EN 10253-4A	-	177	In stock	Enquiry
TK-RS-033-026-SS316TI	Reduction symmetrical 33.7x2.6 / 26.9x2.3, AISI 316Ti, EN 10253-4A	-	185	In stock	Enquiry
TK-RS-042-026-SS	Symmetrical reduction 42.4x2.6 / 26.9x2.3, AISI 321, EN 10253-4A	-	139	In stock	Enquiry
TK-RS-042-026-SS316TI	Reduction symmetrical 42.4x2.6 / 26.9x2.3, AISI 316Ti, EN 10253-4A	-	146	In stock	Enquiry
TK-RS-042-033-SS	Reduction symmetrical 42.4x2.6 / 33.7x2.6, AISI 321, EN 10253-4A	-	139	In stock	Enquiry
TK-RS-042-033-SS316TI	Reduction symmetrical 42.4x2.6 / 33.7x2.6, AISI 316Ti, EN 10253-4A	-	146	In stock	Enquiry
TK-RS-048-033-SS	Reduction symmetrical 48.3x2.6 / 33.7x2.6, AISI 321, EN 10253-4A	-	121	In stock	Enquiry
TK-RS-048-042-SS	Reduction symmetrical 48.3x2.6 / 42.4x2.6, AISI 321, EN 10253-4A	-	121	In stock	Enquiry
TK-RS-048-042-SS316TI	Reduction symmetrical 48.3x2.6 / 42.4x2.6, AISI 316Ti, EN 10253-4A	-	128	In stock	Enquiry
TK-RS-060-042-SS	Reduction symmetrical 60.3x2.9 / 42.4x2.6, AISI 321, EN 10253-4A	-	111	In stock	Enquiry
TK-RS-060-042-SS316TI	Reduction symmetrical 60.3x2.9 / 42.4x2.6, AISI 316Ti, EN 10253-4A	-	115	In stock	Enquiry
TK-RS-060-048-SS	Reduction symmetrical 60.3x2.9 / 48.3x2.6, AISI 321, EN 10253-4A	-	111	In stock	Enquiry
TK-RS-060-048-SS316TI	Reduction symmetrical 60.3x2.9 / 48.3x2.6, AISI 316Ti, EN 10253-4A	-	115	In stock	Enquiry
TK-RS-076-048-SS	Reduction symmetrical 76.1x2.9 / 48.3x2.6, AISI 321, EN 10253-4A	-	86	In stock	Enquiry
TK-RS-076-060-SS	Symmetrical reduction 76.1x2.9 / 60.3x2.9, AISI 321, EN 10253-4A	-	86	In stock	Enquiry
TK-RS-088-060-SS	Reduction symmetrical 88.9x3.2 / 60.3x2.9, AISI 321, EN 10253-4A	-	83	In stock	Enquiry
TK-RS-088-076-SS	Reduction symmetrical 88.9x3.2 / 76.1x2.9, AISI 321, EN 10253-4A	-	83	In stock	Enquiry
TK-RS-114-076-SS	Symmetrical reduction 114.3x3.6 / 76.1x2.9, AISI 321, EN 10253-4A	-	72	In stock	Enquiry
TK-RS-114-088-SS	Symmetrical reduction 114.3x3.6 / 88.9x3.2, AISI 321, EN 10253-4A	-	72	In stock	Enquiry
TK-RS-139-114-SS	Reduction symmetrical 139.7x4.0 / 114.3x3.6, AISI 321, EN 10253-4A	-	66	In stock	Enquiry
TK-RS-168-114-SS	Reduction symmetrical 168.3x4.5/ 114.3x3.6, AISI 321, EN 10253-4A	-	61	In stock	Enquiry

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The symmetrical concentric reducer for butt welding, manufactured from seamless stainless steel pipes in compliance with EN 10253-4, is a reliable solution for demanding pressure applications. Supplied with an EN 10204 3.1 material certificate, it ensures full traceability and quality assurance, making it a trusted choice across various industrial sectors. Widely applied in the construction of pipelines and installations, it also serves as a key component in welded ends for metal and rubber hoses, as well as in fittings and valve assemblies. Available in stainless steel grades AISI 321 and AISI 316Ti, the reducer offers working pressures ranging from 61 to 185 bar, depending on the diameter. For type A fittings, the pressure resistance may be slightly lower than that of a straight pipe of the same dimensions, with exact values determined using the correction factors specified in EN 10253 standards. Beyond standard sizes, customized solutions are offered, including reductions exceeding two DN sizes, ASME-compliant reducers, and a wide range of complementary butt-weld fittings such as 45° and 180° elbows, eccentric reducers, tees, and end caps. This versatility, combined with high durability and corrosion resistance, makes the product an excellent choice for industries seeking long-lasting, safe, and efficient pipeline components.