Carbon Steel DN25–DN200 PN10/16 Back Ring Flange, 301/304/316 Enquiry
工业采购项目
准备更清晰的 RFQ
请提供以下信息，帮助 RELIA 理解零件要求并与您确认下一步。
- 图纸、样品或参考标准
- 材料牌号和首选工艺
- 尺寸、公差和表面处理
- 应用、目标数量和目的地
生产周期、包装和运输条款将在规格与贸易条件确认后按项目确定。
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warranty1 yearcustomized supportOEM, ODM, OBM
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TechnicForgedConnectivityWelding
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shapeEqualhead codeHexagon
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Surface TreatmentPaintingMounting hole diameter0.25 in
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Pipe Class1000SizeCustomized Size
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Product nameElbow
This carbon-steel back-ring flange enquiry includes DN25–DN200, 1–8-inch, PN10/16 and 301/304/316 title references. An accepted component schedule and assembly drawing must define the supplied arrangement. Naming alone does not certify an independently sealing ring or a direct welded connection.
Build the ring and component schedule
Fifteen actual Flange variants combine each 10 mm, 12 mm, 14 mm, 50 mm and 30 mm label with Stainless Steel, Alloy or Carbon Steel. Establish whether the selected label describes a nominal size or measured dimension. The broader title range does not prove continuous availability or equivalence to these choices.
Assign a material designation, grade, condition and inspection traceability to each supplied component. Treat 301/304/316 as grade references requiring selection, rather than certification of every alternative. Identify the supporting component and define any welding scope individually; do not assume that the back ring itself is welded.
Approve contact surfaces and drilling
Provide ring inside/outside diameters, thickness, contact geometry, bolt circle, hole quantity and tolerances. The separate 0.25-inch mounting-hole entry cannot establish a complete drilling pattern. Customized Size requires agreed dimensions, while Equal and Hexagon wording needs confirmation against the actual drawing.
Reference images show drilled annular rings and additional flange-like forms with different appearances. They cannot certify supplied subtype, material or finish. Specify the mating interface and relevant sealing arrangement, gasket and bolting as an assembly.
Document manufacturing and service acceptance
Request relevant forged-production and inspection evidence, plus painting coverage and functional-surface exclusions. Establish the governing basis for PN10/16 and the Class 1000 entry without assuming numerical equivalence. State medium, pressure, temperature, cycling and loads; agree installation, inspection, requested OEM/ODM/OBM work and the stated one-year warranty terms.
每个产品询价都需要的技术信息
在最终确认产品前先整理需求。
产品页只是起点。在确认库存匹配或定制生产前，我们会评审图纸、样品、接口、材料、数量及验收要求。
结合您的项目场景讨论该产品。
提供现有图纸、样品、参考件、目标数量及应用信息。尚不确定的项目可留待评审。
