Excerpt:
For coastal handrails and outdoor railing projects requiring molybdenum-bearing stainless steel. Mo supports pitting resistance, but selection must consider salt deposits, crevices, rain washing and maintenance.
QIDA METAL · PRODUCT PROCUREMENT GUIDE
316L Stainless Steel Railing
For coastal handrails and outdoor railing projects requiring molybdenum-bearing stainless steel. Mo supports pitting resistance, but selection must consider salt deposits, crevices, rain washing and maintenance.
| Procurement Item | Details |
|---|---|
| Applicable Standard | ASTM A240 / UNS S31603 (associated plate components) |
| Product Category | Railings / Stainless Steel Railings |
| Dimensions & Quantity | The sizes below are enquiry references. Available combinations, quantities and delivery times are subject to written quotation. |
| Documentation | Specify heat/batch inspection documents, standard edition, traceability and project certification in your enquiry. Documents are subject to confirmation of actual availability. |
01 / Product Features & Selection
- Select against the service environment and complete component schedule, including bases and fasteners as well as handrails.
- Detail joints to reduce standing water, crevices and dissimilar-metal contact.
- Qida organizes modules, accessories and package labels by area and drawing for overseas installation coordination.
02 / Specifications, Dimensions & Ordering Options
These dimensions help define your purchase requirement; they do not imply that every combination is in stock. Specify tolerances, quantity, delivery condition and destination port. Submit drawings for special sizes.
| Parameter | Specification / Enquiry Range | Points to Confirm |
|---|---|---|
| Overall Height H / mm | Common enquiry heights: 900, 1000, 1100, 1200; project drawings take precedence. | Minimum heights vary by country and application; follow destination requirements. |
| Post Spacing / mm | Common enquiries: 1000, 1200, 1500, subject to load and section design. | Spacing alone does not establish capacity without rail and post dimensions. |
| Handrail Outside Diameter / mm | 38.1, 42.4, 48.3, 50.8, 60.3 or a drawing-specified section | Confirm thickness, grade, joints and finish sample together. |
| Post Section | Round, square, rectangular tube or plate posts to drawing | Wall, base plate and stiffeners follow design; do not assume decorative-tube defaults. |
| Connections / Bases | Welded or mechanical connections; base plates, anchors, embedment and hole spacing to drawing | Project design determines substrate and anchorage verification. |
| Surface | Brushed, polished, weld-cleaned and passivated finish to approved sample | Agree visible-face direction, roughness / appearance and protective film separately. |
| Environmental Information | Distance from sea, salt exposure, cleaning frequency, standing water / sheltered areas and medium | 316L is not a universal solution for seawater immersion or hot chloride service. |
| Material Schedule | A240 S31603 plate; A312 TP316L pipe where specified; fasteners by separate agreement | The main chemistry / property table refers to associated plate, not every pipe component. |
| Infill Arrangement | Horizontal rails, vertical bars or other project-drawing infill | Check whether horizontal members are allowed under local anti-climb rules. |
| Associated TP316L Pipe (A312) | Composition Limits, Mass % |
|---|---|
| C | ≤0.035 |
| Si | ≤1.00 |
| Mn | ≤2.00 |
| P | ≤0.045 |
| S | ≤0.030 |
| Cr | 16.0–18.0 |
| Ni | 10.0–14.0 |
| Mo | 2.0–3.0 |
| Fe | Balance |
03 / Standard Chemical Composition
ASTM A240 / UNS S31603 (associated plate components). Values are mass percentages (%). Maximum limits are shown by ≤, minimum limits by ≥; ranges are specification limits and Fe is the balance. These are not measured results for a current delivery heat.
| Element / Indicator | Requirement or Range |
|---|---|
| C | ≤0.030 |
| Si | ≤0.75 |
| Mn | ≤2.00 |
| P | ≤0.045 |
| S | ≤0.030 |
| Cr | 16.0–18.0 |
| Ni | 10.0–14.0 |
| Mo | 2.0–3.0 |
| N | ≤0.10 |
| Fe | Balance |
Reference standard chemistry for associated plate, mass %. For A312 railing pipe, verify separate pipe limits including C≤0.035 and Si≤1.00.
04 / Mechanical Properties & Application Limits
| Thickness / Material Condition | Yield Strength Re / Rp0.2 (MPa) | Tensile Strength Rm (MPa) | Elongation After Fracture A (%) |
|---|---|---|---|
| Annealed plate reference | Rp0.2 ≥170 | ≥485 | ≥40 |
Strength in MPa, elongation in %. Railing line loads, point loads, deflection and anchorage follow destination codes and project drawings. Material strength does not mean the complete railing has passed system load tests.
05 / Inspection, Processing & Quality Checks
- Confirm individual standards for pipe, plate, fasteners and consumables; A240 chemistry does not apply to every part.
- Check weld heat-tint removal, passivation, water traps and iron contamination. Corrosion performance depends on processing and maintenance.
- Approve finish appearance, direction and cleanliness together. Mirror appearance does not replace corrosion testing.
- Verify structural loads, anchors and installation substrate. Specify any required complete-system load testing before ordering.
06 / Export Packaging for This Product
| Stage | Recommended Arrangement | Key Considerations |
|---|---|---|
| Individual Separation | Individually sleeve brushed / polished surfaces and use soft separation between posts and rails. | Isolate stainless steel from carbon-steel strapping. |
| Assembly Identification | Label sets by drawing, installation area and post / rail / connector type. | Bag fasteners separately, marking grade and quantity for site installation. |
| Crates & Transport | Select crates or frames according to module length and marine-transit handling. | Protect bases, welds and visible faces; include an assembly packing list. |
Before shipment, cross-check product, grade, heat number, size, piece count, net weight and gross weight against the packing list. Match labels to inspection documents. For solid-wood pallets, dunnage or crates, check destination-country rules; wood subject to ISPM 15 must be treated and marked by an approved provider. Load dry cargo and arrange supports, blocking and securing according to weight and centre of gravity.
07 / How Qida Supports Your Procurement
| Procurement Stage | Qida Coordination | Information for the Buyer |
|---|---|---|
| Requirement Review | Review application, standards, material condition, drawings and acceptance items. | A checkable specification list helps reduce language and unit-conversion errors. |
| Order Confirmation | Confirm material, processing, inspection, packaging, delivery milestones and cost responsibilities item by item. | A clear written quotation and mutually agreed purchase requirements. |
| Delivery Coordination | Coordinate production / sourcing progress, labels, packing lists and shipping documents. | Check dimensions, quantities and heat/batch correspondence at agreed milestones. |
| After-Sales Follow-Up | Review issues using order number, heat number, arrival photographs and test records. | A defined issue description and documented resolution communications. |
Qida's established railing business covers cutting, forming, welding and surface treatment. We review custom work against application, structure and drawings. Confirm material, special testing, installation loads and acceptance requirements before fabrication.
08 / Request for Quotation
For an accurate quotation, please provide:
Destination country / coastal exposure + railing drawings / loads + pipe / plate / fastener standards + height / spacing / quantity + finish sample + packaging modules + destination port. Include project specifications and inspection plans.
Define Specifications, Quality and Delivery in One Enquiry
Send your purchasing list to Shandong Qida Metal Technology Co., Ltd. We will review standards, dimensions and destination requirements with you.
Send an Enquiry · qidamt@163.com
139-6951-8618
Technical Sources & Ordering Notes
This selection and enquiry guide is compiled from the primary public sources below. Values are not an inspection certificate for a delivery batch and do not imply a supply or authorization relationship with the source publishers. The agreed order governs standard edition, product form, thickness range, specimen and delivery condition. Similar grades are not automatically equivalent. Confirm project certification and inspection documents before ordering.
