Stainless Steel Pipe Caps

Name: Stainless Steel Pipe Caps
Brand: HuaboPipe

304/316L stainless steel butt-weld caps made to order. Specify the matching pipe size, wall thickness, required cap dimensions and quantity for quotation.

Specifications

Size

DN15–DN1200 (about 1/2″–48″) usual; larger per drawing, up to DN3000

Wall / SCH

Sch10s–XXS, matched to pipe

Standard

GB/T 12459, ASME B16.9, EN 10253, DIN, JIS; others per drawing

Bevel / ends

BW bevel per standard or drawing

Grade

304/304L, 316/316L, 310S, 321, 2205, 2507

Material specification

ASTM A403 WP304/WP304L, WP316/WP316L, WP321, WP310S; ASTM A815 WPS31803/S32205, WPS32750

Process

cold-formed → solution annealed → beveling and sizing → surface treatment (polishing, pickling, sand blasting and sand tumbling)

Inspection

MTR available on request; hydrotest/NDT and lead time per order

Marking

Hard stamping or ink marking, per standard or order

Certificates

ISO 9001/14001/45001, PED, DNV, BV, TÜV SÜD factory approvals; see this site’s Certificates page

Inquiry checklist

When inquiring, state: size, wall/SCH, grade, standard, qty; non-standard parts can be made to drawing or sample.

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How to choose

A welded cap suits a closure that does not need routine removal. If the line must be reopened, review a flanged closure with the piping designer. Nominal diameter alone is insufficient: wall thickness, end preparation, design conditions and inspection requirements must also be specified.

Buying Butt-Weld Caps for Stock Replenishment?

Send a line-by-line purchasing list for a mixed-size trial order. Standard items can be reviewed together; minimum quantities for special items and lead time are confirmed after checking the specifications, quantities and production schedule.

What to include in each line

Butt-weld cap and matching pipe DN/NPS or outside diameter
Pipe wall thickness or schedule and required end preparation
Material specification and exact grade, such as 304 or 316L
Dimensional standard, cap height or drawing for special dimensions
Any seamless or welded construction requirement and quantity
Marking, material document type and any additional testing

Example inquiry line (for quotation only):
Butt-weld cap | 316L | NPS 2 | Sch40S matching pipe | EN 10253 | 20 pcs

Add your required material specification and inspection documents. Include the destination and requested delivery date for the order.

Material Documents & Traceability

Material documentation with heat numbers, chemical composition and mechanical test results can be supplied with traceability to the corresponding products or batches. Specify the document type and marking requirements before ordering. Inspection and certificate coverage are confirmed for the ordered items.

Combining several fitting types? See our stainless steel butt-weld fittings supply overview, or send your complete list for a quote.

FAQ

What information is needed for a cap quotation?

Send DN or NPS, outside diameter, wall thickness or schedule, material, standard, quantity and any overall-height requirement. Attach a drawing for non-standard dimensions.

Cap or blind flange?

A butt-weld cap is welded to the pipe. A blind flange is part of a bolted closure and needs a compatible flange, gasket and bolting. Select the arrangement to suit access and design requirements.

Does a thicker cap automatically meet my pressure requirement?

No. Suitability depends on the specified material, dimensions, design code and operating conditions. Provide the project requirements for review.

Can you supply special dimensions?

Send the drawing and acceptance requirements. The size, wall and material combination, inspection scope and delivery time are confirmed before ordering.

Can I add caps to a mixed fittings trial order?

Yes, standard caps can be reviewed with elbows, tees or reducers in one purchasing list. Specify size, wall thickness, material and quantity for each item. Minimum quantities for special items, production availability and lead time are confirmed with the quotation.

Are all published sizes available from stock?

These butt-weld caps are supplied to order. Send your list; minimum quantity and lead time are confirmed with the quote.

Prepare your inquiry

Send the dimensions, material, quantity and inspection requirements above. Include the drawing revision and delivery destination so the quotation can be checked against the same specification.

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