Adjustable server rail kit / rail extension
可调服务器滑轨/延长件 · White space
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What Qing asks
One dense message. Five is the whole budget per supplier reply, so the questions that decide comparability go first.
- 1.
导轨是固定式(静态)还是滚珠滑动式？是否为免工具卡扣安装？是两节还是三节结构？
Static or ball-bearing sliding, tool-less snap-in or screw-mounted, and 2-section or 3-section?
3-section full extension is required to service a server in place; 2-section is not.
- 2.
导轨静态承重多少公斤？完全拉出状态下的承重是多少？依据哪个测试标准(如UL 60950-1 / IEC 62368-1)？是否有测试报告？
Static load rating in kg, load rating at full extension, and the test standard (UL 60950-1 / IEC 62368-1) with a test report?
Full-extension rating is far below the static rating; a heavy node fails exactly at that moment.
- 3.
导轨支持的前后立柱可调距离是多少毫米到多少毫米？
What is the front-to-rear rack post adjustment range in mm (minimum to maximum)?
Rails whose range misses the customer's rack depth are scrap; this is the number most often omitted.
- 4.
支持方孔、圆孔还是螺纹孔立柱？是否随附转接件？螺纹规格是M5、M6、10-32还是12-24？
Square-hole, round-hole, or threaded posts; are adapters included; and which thread (M5/M6/10-32/12-24)?
Thread and hole mismatch blocks installation on site with no workaround.
- 5.
这套导轨对应哪些机箱型号？机身侧是通用打孔支架还是专用卡扣？请提供安装孔位图。
Which chassis models does this rail fit; is the server-side bracket a universal drilled type or model-specific snap-in? Please provide the hole-pattern drawing.
Universal rails often need drilling; model-specific rails are useless one generation later.
- 6.
这套导轨是否兼容理线臂？装上理线臂后后部还需要多少毫米空间？理线臂是否左右可换向？
Is this rail CMA-compatible, how much extra rear depth does the CMA add in mm, and is it left/right reversible?
The CMA's added depth is what turns a 'fits the rack' server into one that does not.
- 7.
导轨每箱装几套？外箱尺寸多少？每套毛重多少公斤？是否单套独立包装、附件包(螺丝、卡扣)是否齐全？
How many rail sets per carton, carton dimensions, gross weight per set, is each set individually bagged, and is the hardware pack (screws, clips) complete?
Keeps the freight-decisive half of the report's finish_and_packaging and drops the salt-spray decoration for indoor rails.
- 8.
完全拉出的行程是多少毫米？是否有拉出锁定、防倾倒和快拆功能？是否支持维护时倾斜？
Full-extension travel in mm, does it have extension lock-out, anti-tip and quick-release, and does it support tilt for servicing?
- 9.
导轨材质与表面处理是什么？盐雾测试多少小时？每套如何包装、每箱几套、单套毛重多少？
Rail material and surface finish, salt-spray hours, and packing details (sets per carton, gross weight per set)?
这批货是全新原封、官翻、拆机件还是工程样片(ES/QS)？请在形式发票上写明状态。如果是拆机件，来源和使用时长是多少？
报价是EXW、FOB还是CIF？指定口岸是哪里？报价里不含哪些费用(出口报关、内陆运输、保险、目的港费用)？
外箱尺寸多少？每箱装几台、毛重多少公斤？每托盘几箱？整单总体积多少立方米？是木托还是纸托、是否需要熏蒸证明？
请给出阶梯报价：1台、10台、50台、100台各是什么价格？每个型号的起订量是多少？价格有效期多久？
出口报关准备用哪个HS编码？报价是含税价还是不含税价？该编码的出口退税率是多少、退税是否已经体现在报价里？
整机原产地写哪里？能否出具原产地证(一般CO还是Form E/RCEP优惠证)？货物是从中国直接出口，还是经香港、新加坡或越南转运？
质保多少个月？DOA(到货即损)申报期限是几天？返修是寄回中国还是有海外备件？是否提供先行换货？返修运费谁承担？
这个托架/导轨/面板是原厂件还是兼容件？上面有没有原厂LOGO或型号标识？能否书面保证不侵犯第三方商标和专利，并承担相关责任？
整机和关键部件(CPU、加速卡、网卡)的原产地分别是哪里？产品里有没有使用美国原产的芯片、软件或技术？大概占多少比例？能不能配合签署最终用户和最终用途声明、承诺不转运？这个型号以前出口过哪些国家？
合同和发票的签约主体全称是什么？统一社会信用代码是多少？工厂是自有还是代工？母公司或控股股东是谁、持股比例多少？有没有国资或上市公司背景？
请提供公司全称、统一社会信用代码和营业执照复印件。贵司是生产工厂、原厂授权代理还是贸易商？如为工厂，工厂地址在哪里、可否安排验厂或视频验厂？开票主体与收款主体是否为同一家公司？
最小起订量是多少？请给出阶梯报价（如100/500/1000/5000片）。报价有效期多少天？NAND和HDD价格波动时如何调价？是否接受锁价？
+ 37 more universal terms
How buyers get burned here
Category-specific, from research rather than generic advice
- OEM vs fabricator vs trader. Three tiers exist and they quote the same product. Integrator-OEMs (Huawei, Envicool, KSTAR, Kehua, Yimikang, ZTE, Inspur) own the thermal/fire/electrical integration and warrant the system. True rack OEMs (Keydak, Toten, MERO-TSK) own tooling, a brand and a catalogue. Below them sit hundreds of Hebei/Ningbo/Foshan sheet-metal shops and export trading houses that will print any logo. A legal name containing 进出口 / Imp. & Exp. is a trading company. Ask for the plant address, the business licence scope, and a video walk of the powder-coat line — not a catalogue.
- Static vs dynamic load quoted interchangeably. Chinese datasheets frequently show only 静载 (static). Dynamic (rolling, loaded) rating is typically about half — Inspur's ISC-NR42 is 2450 kg static / 1250 kg dynamic. If a rack quotes '2000 kg' with no qualifier, assume it is static and that you cannot roll it loaded.
- PVC fibre raceway sold as ABS. Optical trunking (光纤槽道) is specified in ABS or PC/ABS because PVC releases chlorine over time and heavily above about 60 °C. Chinese carriers require ABS; substitution to cheaper PVC is common and invisible on delivery. Require a material certificate and a burn/FTIR test on an incoming sample.
- '沈飞' raised-floor branding is a fragmented family, not a company. Dozens of independent regional entities trade as 沈飞地板 (Chongqing, Zhuhai, Guangzhou, Shenzhen and others) with no common specification, tooling or QA. Buying '沈飞' does not identify a manufacturer. Specify the legal entity and the plant, and test-certify each source separately.
- Fire linkage left out of the containment scope. A sealed aisle is normally only permitted where the roof drops away or auto-opens on the fire alarm: electromagnets hold flaps closed, release on power loss, open within ~3 s, with openable area typically ≥60% of aisle plan area. Fabricators quoting a containment kit routinely omit the dry-contact interface and the hold-open magnets. Put the fire-linkage interface in the containment supplier's scope and make it a named line item.
- Gas suppression and a sealed roof are incompatible unless the roof releases. Where the room uses total-flooding gas, the controller must shut dampers and stop air handlers before discharge (GB 50174-2017). A fixed non-releasing containment roof both blocks agent distribution and traps it. Fixed glass roofs are only sourceable for rooms on sprinkler/pre-action with heads correctly located.
- Seismic bracing omitted from cable tray and busway. GB 50981-2014 makes seismic support mandatory (clauses 1.0.4, 5.1.4, 7.4.6) at intensity 6 and above, for cable tray and busway above roughly 150 N/m and electrical conduit ≥60 mm ID. Importers buying tray on price routinely leave the bracing out, then discover it at inspection. Price bracing per hanger point with the tray, not after.
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