Zaid Arshad writes practical manufacturing guides for engineers and sourcing teams evaluating custom fittings, CNC-turned parts, sheet-metal components, stampings and die-cast parts. His articles focus on clearer RFQs, supplier evidence, inspection planning and drawing-to-production decisions.
Zaid Arshad 专注于定制金属零件、CNC 车削、RFQ 准备、供应商采购、加工质量、检测以及按图制造等内容，为全球采购商提供实用制造指南。
A practical RFQ checklist connecting drawing revision, material, critical features, finish, inspection evidence, quantities and delivery terms to one controlled quotation.
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NPT, BSP and metric threads are not interchangeable labels. The RFQ must state the exact standard, size, pitch, taper or parallel form, engagement requirement and sealing method.
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