Can DIN 11851 end with GZ, for welding, stainless steel, type DZS withstand 40 bar at DN25 and maintain Ra 0.8 Âµm in the bore?

Yes. A DIN 11851 end with GZ, for welding, stainless steel, type DZS can meet those requirements. The standard specifies an end fitting with external thread (Rd), a welding stub, and an internal surface finish Ra 0.8 Âµm in the bore for food/chemical use. The maximum allowable working pressure for the connection per DIN 11851 is 40 bar for DN10âDN40, which includes DN25, so DN25 can withstand 40 bar. Ensure appropriate gasket material for the intended operating temperature and verify weld procedure and material grade of the stainless steel to maintain Ra 0.8 Âµm after welding and any necessary machining or surface treatment.

Can DIN 11851 end with GZ, for welding, stainless steel, type DZS, meet 40 bar at DN25 while ensuring Ra 0.8 Âµm in the bore?

Yes. A DIN 11851 end with GZ, for welding, stainless steel, type DZS Format can meet 40 bar at DN25 while ensuring Ra 0.8 Âµm in the bore, provided it conforms to the DIN 11851 specification: external thread Rd with welding stub, Ra (in the hole) 0.8 Âµm, stainless steel construction, and the maximum allowable working pressure per DIN 11851 for DN10âDN40 is 40 bar. Ensure correct material grade, proper welding procedures, gasket compatibility for operating temperature, and inspection/traceability to verify the bore finish and pressure capability.

Can DIN 11851 end with GZ, for welding, stainless steel, type DZS, achieve 40 bar at DN25 while keeping Ra 0.8 Âµm?

Yes. DIN 11851 end with GZ, for welding, stainless steel, type DZS Format can achieve 40 bar at DN25 while keeping Ra 0.8 Âµm, provided the following conditions are met: - The component complies with the DIN 11851 specification: external thread Rd, welding stub, Ra 0.8 Âµm in the inner surface as required for food/chemical use. - The connection size falls within the standard allowable pressure range: DN10âDN40 allows up to 40 bar (so DN25 is covered). - The stainless steel material and weld quality are appropriate for the pressure and service temperature; welds must be executed to maintain structural integrity and surface finish in the bore. - The selected gasket material suits the operating temperature and media; gasket selection and installation must follow DIN 11851 guidance to prevent leakage at 40 bar. - Proper machining/finishing processes must ensure the Ra 0.8 Âµm surface is maintained after welding and any postâweld treatment. Nonâconforming surface or heatâaffected zones must be remedied (e.g., electropolishing or grinding) without compromising dimensions. - Assembly and testing (pressure/leak tests) must confirm the connection holds 40 bar in the intended service conditions. If all the above are observed, DIN 11851 end with GZ, for welding, stainless steel, type DZS Format at DN25 can be used at 40 bar while maintaining Ra 0.8 Âµm.

DIN 11851 end with GZ, for welding, stainless steel, type DZS

All products, Hygienic stainless steel couplings/

Additional information

Material	SS – stainless steel
Standard length [m]	100

DIN 11851 end fitting with external thread Rd, with a stub for welding, Ra (in the hole) 0.8 µm, for use in the food and chemical industry. Maximum allowable working pressure (for the connection itself according to DIN 11851): 40 bar (DN10÷DN40), 25 bar (DN50÷DN100), 16 bar (DN125÷DN150). Operating temperature: depending on the type of material used for the gasket. Material: stainless steel.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Actions
NH-DZS-010	End. DIN 11851 for connection DN10, Rd 28x1/8", 13x10 mm	-	40	In stock	Enquiry
NH-DZS-015	End. DIN 11851 for connection DN15, Rd 34x1/8", 19x16 mm	-	40	In stock	Enquiry
NH-DZS-020	End. DIN 11851 for connection DN20, thread 44x1/6", 23x20 mm	-	40	In stock	Enquiry
NH-DZS-025	End. DIN 11851 for connection DN25, thread 52x1/6", 29x26 mm	-	40	In stock	Enquiry
NH-DZS-032	End. DIN 11851 for connection DN32, thread 58x1/6", 35x32 mm	-	40	In stock	Enquiry
NH-DZS-040	End. DIN 11851 for connection DN40, thread 65x1/6", 41x38 mm	-	40	In stock	Enquiry
NH-DZS-050	End. DIN 11851 for connection DN50, Rd 78x1/6", 53x50 mm	-	25	In stock	Enquiry
NH-DZS-065	End. DIN 11851 for connection DN65, thread 95x1/6", 70x66 mm	-	25	In stock	Enquiry
NH-DZS-080	End. DIN 11851 for connection DN80, Rd 110x1/4", 85x81 mm	-	25	In stock	Enquiry
NH-DZS-100	End. DIN 11851 for connection DN100, Rd 130x1/4", 104x100 mm	-	25	In stock	Enquiry
NH-DZS-125	End. DIN 11851 for connection DN125, Rd 160x1/4", 129x125 mm	-	16	In stock	Enquiry
NH-DZS-150	End. DIN 11851 for connection DN150, Rd 190x1/4", 154x150 mm	-	16	In stock	Enquiry

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DIN 11851 end fitting with external thread Rd, with a stub for welding, Ra (in the hole) 0.8 µm, for use in the food and chemical industry. Maximum allowable working pressure (for the connection itself according to DIN 11851): 40 bar (DN10÷DN40), 25 bar (DN50÷DN100), 16 bar (DN125÷DN150). Operating temperature: depending on the type of material used for the gasket. Material: stainless steel.