# Pipeline Components per Drawing | Fittings, Flanges, Valves | 48h > Fittings, flanges, gaskets and bolting machined per drawing for pipeline and station construction. ASME B16.9 and B16.5, EN 10204 3.1. Quote in 48 hours. https://www.sinbo-machining.com/case/oilgas-pipeline-components --- ## On This Page - Typical component families - Typical supply parameters - What pipeline EPCs and station builders actually order - 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? # Machined Components for Pipeline & Station Construction Pipeline EPC contractors and station builders buy fittings, flanges, gaskets and bolting by the tonne against ASME dimensions — and they need a supplier whose material certificates, dimensional reports and delivery schedule match the pipe already in the ground. We machine them from 100 pieces with full traceability, quoted in 48 hours. One dedicated technical contact handles quoting, production and delivery questions from the first drawing through project close-out. Application at a glance ### Typical component families | Fittings | A105/LF2, ASME B16.9 | Flanges | A105/LF2/F51, ASME B16.5 | Gaskets & bolting | Graphite, A193 B7/A194 2H ### Typical supply parameters | Batch range | 100–50,000 pcs | Tolerance scheme | ASME B16.5/B16.47 dimensions | Documents | EN 10204 3.1, dimensional report ## What pipeline EPCs and station builders actually order Pipeline construction runs on a schedule set by right-of-way access and weather, and the fittings, flanges and bolting must arrive before the welders do. The buyer orders by ASME dimension and material grade, with certificates that match the pipe already welded. When a fitting is missing or a flange arrives with the wrong pressure class, the welders stand down and the project loses a day for every hour of delay. The supplier who solves both at once — a certified material with a real dimensional report, at a lead time the welders can wait for — becomes the standard for every future project, which is exactly the position we build for. We machine fittings, flanges and bolting per ASME B16.9 and B16.5 in carbon steel, low-temperature carbon steel and stainless, with EN 10204 3.1 certificates matching the pipe grade. Gaskets are supplied in spiral-wound or kammprofile types to match the flange face, and the bolting is coated for the service environment. Everything ships DDP in 5 to 8 days by air, and repeat orders run against your part number with the same documentation. Repeat orders reuse the stored specification without renegotiation, and the document pack repeats identically on every call-off so your files stay complete across programs and years. ## Typical component families and processes | Component (IT / EN) | Typical material | Process | Typical batch | Elbows & tees (弯头三通) | A105 / LF2 / F51 | Forging + machining | 100–10,000 | Flanges WN/SO/BL (法兰) | A105 / LF2 / F51 | Forging + machining | 100–20,000 | Gaskets (垫片) | Graphite / spiral wound | Manufacturing | 500–50,000 | Stud bolts & nuts (双头螺栓) | A193 B7 / A194 2H | Cold heading + rolling | 1,000–50,000 | Specials per drawing | Per drawing | Turning + milling | 50–2,000 Non-standard dimensions and special pressure grades machined per drawing alongside the standard ASME range for your project. ## 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. Tooling, program revisions and inspection records are kept on file so that call-offs remain consistent with the approved first article. Engineering changes — material substitutions, tolerance updates, plating or 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. Plating, cleanliness and packaging requirements are confirmed per drawing. ## FAQ Can you match the pipe grade and heat number?Yes. We machine fittings and flanges from material that matches the pipe specification, and every batch ships with EN 10204 3.1 certificates carrying the heat number. Where the project requires weld-procedure qualification, our material certificates provide the chemistry and mechanical data your welding engineer needs to qualify the joint. Heat-number traceability on every certificate ensures the alloy matches the pipe already in the ground. What pressure classes do you cover?ASME B16.5 classes 150 through 2500 in carbon steel, low-temperature carbon steel and stainless, and ASME B16.47 for large-diameter flanges. Non-standard dimensions and special pressure classes are machined per drawing, and the dimensional report reflects the actual measured values against your specification. Flange dimensions are reported to ASME B16.5 with actual measured values for every sealing surface. How do you handle project schedules?Pipeline construction is weather-driven, and the fittings must arrive before the welders. We quote in 48 hours, ship standard items in 5 to 8 days by air DDP, and split-ship when one pressure class is holding up the tie-in. Framework agreements with buffer stock on running sizes are available for repeat projects. What are the payment and delivery terms?New relationships start with 30 percent on order and 70 percent before shipment, or an irrevocable letter of credit for framework values. First articles ship in 7 to 15 days, and series orders deliver DDP in 5 to 8 days by air including customs clearance, or 35 to 45 days by sea for planned call-offs against forecast. ### Related Materials · Related Services · Related Case Studies [Related Materials: Stainless Steel ](https://www.sinbo-machining.com/products/materials/stainless-steel/)[Brass & Copper ](https://www.sinbo-machining.com/products/materials/copper/)[Related Services: CNC Machining ](https://www.sinbo-machining.com/services/cnc-machining)[Cold Heading ](https://www.sinbo-machining.com/services/cold-heading)[Related Case Studies: Brass Press Fittings ](https://www.sinbo-machining.com/case/brass-press-fittings/)[· Shipbuilding Valve Parts ](https://www.sinbo-machining.com/case/kr-shipbuilding-valves/)This page describes a representative application scenario for the pipeline and station construction supply 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)