# Brass Cold-Forged Components for Plumbing & Heating (SHK) – Application Case > Typical brass components for plumbing and heating systems: cold-forged fittings and pressfitting blanks in CW617N and DZR brass, with turned sealing faces. Monthly volumes from 5,000 pieces. https://www.sinbo-machining.com/case/brass-press-fittings/ --- ## On This Page - Typical component families - Typical supply parameters - Industry scenario: cold forging plus turned sealing faces - Typical component families and processes - Workflow: drawing, sample approval and recurring series - Quality and documentation - FAQ - Related Materials · Related Services · Related Case Studies - Planning components like these? # Brass Cold-Forged Components for Plumbing & Heating (SHK) Typical brass components for plumbing and heating systems: cold-forged fittings and pressfitting blanks in CW617N and DZR brass, with turned sealing faces. Monthly volumes from 5,000 pieces. Application at a glance ### Typical component families | Screwed fittings | CW617N, DZR/CW602N, forged | Pressfitting blanks | Brass, stainless, cold-forged | Heating valve bodies | Brass, forged + turned ### Typical supply parameters | Batch range | 5,000–20,000+ pcs per month | Tolerance scheme | DIN ISO 2768-mK, sealing faces to drawing | Documentation | EN 10204 3.1, DZR material proof ## Industry scenario: cold forging plus turned sealing faces Plumbing and heating system manufacturers buy brass components in monthly volumes that make pure machining uneconomical. The established solution is cold forging (Kaltfließpressen) of the near-net blank — saving 30–50% material versus machining from bar — followed by CNC turning of the sealing and thread-bearing surfaces. DZR (dezincification-resistant) grades such as CW602N are the standard requirement for potable-water contact. Combining cold forging with in-house turning under one roof keeps blank and finished-part quality in one controlled process chain. ## Typical component families and processes | Component (DE / EN) | Typical material | Process | Typical batch | Messing-Verschraubungen (brass screwed fittings) | CW617N, DZR/CW602N | cold forging + turned sealing faces | 10,000+ pcs/month | Pressfitting-Rohlinge (pressfitting blanks) | brass, stainless steel | cold forging | 10,000+ pcs/month | Heizungs-Ventilkörper (heating valve bodies) | brass | cold forging + turning | 5,000–20,000 pcs/month | Verteiler-Komponenten (manifold components) | brass, stainless steel | turn-mill | 1,000–10,000 pcs Forging blanks and finished turned surfaces come from the same process chain, keeping sealing-face quality and blank consistency in one controlled flow. ## Workflow: drawing, sample approval and recurring series The standard flow: drawing review and quotation within 48 hours, first samples in 7–15 days, first article inspection and approval, then series production against the approved reference. Batch sizes follow the table above — from single spare parts to tens of thousands of pieces per order, depending on the component family. For repeat orders, tooling, program revisions and inspection records are kept on file, so call-offs remain consistent with the approved first article. Engineering changes — material substitutions, tolerance updates, packaging changes — are handled as controlled changes against the same records. ## Quality and documentation DIN ISO 2768-mK applies as the default tolerance scheme for unspecified dimensions. EN 10204 3.1 inspection certificates are standard for metallic parts, First Article Inspection supports the approval step, and RoHS/REACH declarations are available where required. Surface treatment, cleanliness and packaging requirements are confirmed per drawing. ## FAQ Why cold forging instead of machining from bar?For monthly volumes above roughly 5,000 pieces, cold forging saves 30–50% material and shortens cycle time; the sealing and thread-bearing surfaces are then finished by turning. Do you supply DZR grades for potable water?Yes. CW602N/DZR brass is part of the standard material portfolio, with material proof per heat. What sealing-face quality can you hold?Sealing faces are CNC-turned after forging to the drawing specification — concentricity and surface values are confirmed per part family. Which monthly volumes are realistic?Fitting families in this vertical typically run 5,000–20,000+ pieces per month, stable over years. ### Related Materials · Related Services · Related Case Studies [Related Materials: Copper ](https://www.sinbo-machining.com/products/materials/copper/)[Related Services: Cold Heading ](https://www.sinbo-machining.com/services/cold-heading/)[Related Case Studies: Valve Components ](https://www.sinbo-machining.com/case/valve-components/)[· Us Hvac Brass Parts ](https://www.sinbo-machining.com/case/us-hvac-brass-parts/)This page describes a representative application scenario for the plumbing and heating (SHK) component manufacturing industry, compiled from typical requirements of this vertical. It is not tied to any specific customer or order; series quantities, materials and tolerances are confirmed per drawing for each enquiry. ## Planning components like these? Send your drawing — Sinbo Precision will review material, tolerance scheme and batch plan and return a quotation within 48 hours. Samples in 7–15 days. [Get a Quote in 48 Hours ](https://www.sinbo-machining.com/quote/)