SS400 Pickled Coil: Flat Part Procurement for Japanese Equipment Drawings
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SS400 pickled coil is often used for flat parts such as base plates and connecting plates in Japanese equipment drawings. Keeping the original grade and standard, and paying attention to flatness, hole positions, cutting allowance, and coating requirements are key to ensuring parts meet the drawing. Jiangsu Gaozhen handles enquiries by grade, dimensions and processing requirements.
SS400: material and applications
SS400 is a Japanese hot-rolled grade for general structural use. Gaozhen’s SS400 pickled sheet and coil can be discussed as stock for equipment base plates, connecting plates and other drawn parts. Pickling removes hot-rolled scale; subsequent cleanliness and surface requirements still follow fabrication and painting needs.
Retain SS400 and the referenced standard when they appear on an equipment drawing. Base-plate flatness, connection-hole datums and any later machining affect stock choice and cutting. Listing material and part-dimensional requirements separately helps cover the conditions needed for assembly.
Material-category reference: https://www.nipponsteel.com/product/catalog_download/pdf/U001en.pdf
Typical Parts and Processing
Base plates and connecting plates for Japanese equipment are mostly flat structures. The process typically includes uncoiling, shearing or laser cutting, punching, deburring, and, if necessary, bending and coating. When cutting, machining allowance should be left according to the drawing, especially the distance from hole to edge and compensation for subsequent bending; insufficient allowance may cause hole offset or out-of-tolerance dimensions after bending. After punching, check for burrs at hole edges to avoid affecting assembly fit. For bent parts, confirm the relationship between the bend line and the rolling direction. Before coating, confirm surface cleanliness. Pickled coil may develop slight rust spots or stains during storage and handling, and whether these affect coating adhesion should be evaluated. For base plates with flatness requirements, check warpage after cutting and straighten if necessary.
Procurement Details and Rationale
The procurement list should state SS400 and the standard number referenced in the drawing, and specify the surface condition requirements for pickled coil, such as absence of scale and permissible slight scratches. Flatness requirements should be set according to the base plate area and assembly method; too strict a requirement increases straightening cost, while too loose may affect hole alignment. Dimensions related to hole positions should be marked on the procurement drawing, clarifying cutting allowance and whether pre-punching is by the supplier. Coating requirements should describe pre-treatment; whether pickled coil can be coated directly should be confirmed with the coater. Delivery form, such as coil or cut-to-length plate, affects subsequent cutting efficiency and should be chosen according to the production pace. The rationale for retaining the original grade is that standard systems differ; SS400 and Q235B are not simply equivalent in chemical composition and mechanical properties, and item-by-item confirmation avoids acceptance disputes.
Common Question: SS400 vs. Q235B
Q: Is SS400 the same as Q235B, and can it be directly substituted? A: They belong to different standard systems and cannot be regarded as equivalent. Procurement should retain SS400 and the original standard number as per the drawing. If substitution is considered, chemical composition, mechanical properties, dimensional tolerances, and surface condition must be confirmed item by item to meet part requirements, with written approval from the designer.
SS400 dimensions and supply enquiry
The Gaozhen SS400 product page lists these catalogue dimensions: Thickness range: 0.8-20 mm; Width range: 1000/1250/1500 mm. These values support specification discussions; confirm the required combination of gauge, width and condition for the material.
Discuss pickled stock alongside cut-to-length, slitting and drawing-based cutting. Include the later manufacturing route for parts requiring bending or joining.
Product details: View related product details
Products and processing enquiries at Jiangsu Gaozhen
Jiangsu Gaozhen Trading Co., Ltd. handles trading and processing coordination for steel sheet, coil and related metal materials. Customers can find a grade and discuss drawings, service conditions and manufacturing requirements.
The product range includes cold-rolled, hot-rolled, galvanized and other coated, pickled, spring-steel, carbon-steel and stainless sheet or coil, plus zinc-titanium / zinc-copper-titanium and copper-titanium alloys. For a mixed-material project, list SS400 and other grades as separate items with their own specifications.
Product catalogue: https://gaozhenmetal.com/en/products/
Enquire about SS400 at Jiangsu Gaozhen
For a SS400 enquiry, prepare the following information so the business team can review supply and processing against the actual component.
Material and dimensions: SS400, drawing revision or specified requirements, gauge and tolerance, width, and cut length for sheets.
Project conditions: pickled surface and protection, cut sheets or slit coil, later forming and joining operations.
Purchase plan: trial or batch requirement, quantity, delivery destination and requested timing.
Choose “Send enquiry” in the floating assistant, complete product, dimensions, quantity and contact details, confirm consent and submit. A receipt reference confirms that the form has been saved in Gaozhen’s website inbox. A chat message alone is not a submitted enquiry form.
Alternatively, contact Wang Dawei at +86 13861182855 or dawei5373@126.com. Mention this SS400 article to help identify the product under discussion.
The business team confirms pricing, available specifications, stock and delivery against the enquiry.