Excerpt:
For corrosion-resistant brackets, equipment frames and architectural metalwork. Hot rolled, bent and welded channels differ in geometry and manufacture; specify the manufacturing route first.
QIDA METAL · PRODUCT PROCUREMENT GUIDE
304L Stainless Steel Channel
For corrosion-resistant brackets, equipment frames and architectural metalwork. Hot rolled, bent and welded channels differ in geometry and manufacture; specify the manufacturing route first.
| Procurement Item | Details |
|---|---|
| Applicable Standard | ASTM A276/A276M / 304L (bars and shapes) |
| Product Category | Steel Sections & Bars / Channels |
| 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
- Separate material standard, geometry and manufacture to avoid substituting a thin bent channel for a hot rolled section.
- For equipment requiring corrosion resistance and consistent visible faces, agree the finish by sample.
- Low-carbon material supports welded-component selection; post-weld cleaning and isolated packaging protect the surface.
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 |
|---|---|---|
| Section Designation | h×b×tw×tf, or explicitly specified UPN / UPE geometry | A single designation such as channel 100 does not define all dimensions. |
| Common Depth / mm | 50, 65, 80, 100, 120, 140, 160, 180, 200 | Use the selected series as reference; verify actual stainless dimensions, corners and mass separately. |
| Flange Width / mm | Depending on type: 38, 42, 45, 50, 55, 60, 65, 70, 75, 80, etc. | Arbitrary depth / flange combinations do not imply standard stock availability. |
| Length / m | 6 or fixed lengths | Agree welding procedures and inspection for fabricated welded sections. |
| Material / General Requirements | Applicable ASTM A276 / A484 requirements; custom welded parts to drawing | Formed plate and welding consumables have their own applicable standards. |
| Surface | Pickled, blasted, brushed or polished requirements | Specify visible faces, weld condition and protective film. |
03 / Standard Chemical Composition
ASTM A276/A276M / 304L (bars and shapes). 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 | ≤1.00 |
| Mn | ≤2.00 |
| P | ≤0.045 |
| S | ≤0.030 |
| Cr | 18.0–20.0 |
| Ni | 8.0–12.0 |
| Fe | Balance |
Common A276 304L bar / shape composition, mass %. Confirm product standards separately for laser-welded, hot rolled and cold-drawn routes. Do not substitute A240 plate or A312 pipe chemistry.
04 / Mechanical Properties & Application Limits
| Thickness / Material Condition | Yield Strength Re / Rp0.2 (MPa) | Tensile Strength Rm (MPa) | Elongation After Fracture A (%) |
|---|---|---|---|
| Annealed reference; confirm dimensions and specimens | Rp0.2 ≥170 | ≥485 | ≥40 |
Strength in MPa, A in %. Accept cold-worked and built-up shapes against the actual product standard. Annealed round-bar data does not establish the structural capacity of a welded assembly.
05 / Inspection, Processing & Quality Checks
- Check 304L bar / shape standard and manufacture. Trace both parent material and consumables for welded assemblies.
- Check section size, corners, flange perpendicularity, straightness and twist.
- Avoid carbon-steel contamination. Agree post-weld cleaning, pickling / passivation for the application.
- Assess 316L or other materials for outdoor salt exposure or aggressive cleaning media. 304L is not universally rust-proof.
06 / Export Packaging for This Product
| Stage | Recommended Arrangement | Key Considerations |
|---|---|---|
| Section-Separated Bundles | Identify section designation, steel grade, length and heat number separately. | Keep different grades and delivery conditions in separate bundles. |
| Supports & Corner Protection | Protect flanges, leg edges and machined faces; support long sections at multiple points. | Prevent handling twist, local damage and permanent bending. |
| Loading Checks | Plan loading around cut length, bundle weight, forklift points and container-door clearance. | Assess container type and handling arrangements in advance for long or heavy loads. |
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 focuses on clear specifications, material requirement checks and delivery coordination. Include cutting, cut-to-length, surface treatment, third-party inspection and certificate requirements in your enquiry so that the achievable scope can be agreed before order placement.
08 / Request for Quotation
For an accurate quotation, please provide:
304L / product standard + section type or h×b×tw×tf + manufacture + length × quantity + finish sample + drawings + 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.
