Bevel End
/glossary/bevel-endPipe or tube end machined to a defined weld preparation for a butt-weld joint.
A bevel end is a pipe or tube mouth cut to a named weld preparation, not a generic chamfer. Kanpur fabricators at Panki, about 12 km from the Bartan Bazar yard, order it on process and line-pipe joints that will be butt-welded. Use ASME B16.25-2022 when the piping class adopts its buttwelding-end preparation. The API 5L page lists a 30° bevel as one offered end finish. RP Sales quotes the pipe ex-warehouse Kanpur, GST 18% extra as the budgeting basis.
In detail
Bevel end means a pipe or tube end machined to a defined weld preparation. ASME B16.25-2022 covers buttwelding-end geometry, including single-angle and compound bevels, internal and external shaping of heavy-wall components, and GTAW root-pass details. API Specification 5L lists a 30° bevel when that end finish is ordered. Angle, root face, land, and internal transition come from the approved joint detail and welding procedure. V, compound, J, and U preparations are not interchangeable defaults.
What a bevel end is, and what it is not
A bevel end is a machined weld preparation. The mill or the yard cuts an angle, a root face or land, and any internal transition the joint detail shows. Two pipes then meet as a groove for a butt weld. The approved WPS owns penetration, not the word bevel.
ASME B16.25-2022, Buttwelding Ends (ASME catalogue, retrieved 2026-09-05), covers preparation of buttwelding ends of piping components to be joined by welding. The public scope includes welding bevels, external and internal shaping of heavy-wall components, and preparation of internal ends, including dimensions and tolerances. Coverage includes joints with no backing rings, split or solid backing rings, consumable inserts, and GTAW of the root pass.
A bevel is not a plain end. It is not a thread. It is not a grooved fire-main end. It is not a socket. Compare buttweld versus threaded before the PO. A fitter cannot weld a threaded-and-coupled mouth without cutting the thread off.
V, compound, J, and U grooves are different drawings. A compound bevel is not a substitute for a single-angle bevel on a 4 mm ERW tube. Copy the joint detail.
Who should order bevel, and who should order PE or T&C
Order bevel when the approved joint is a butt weld: process piping, LSAW or HSAW transmission, structural splices, and boiler connecting pipe that the WPS welds end-to-end. Panki shops take bevel on A106 and A53 spools. Sugar-mill steam headers take bevel only when the IBR drawing shows a butt weld.
Order plain end when the joint is a socket weld, a mechanical coupling, or a field cut. Order threaded and coupled on small-bore water and on borewell column when the drawing shows threads. See threaded versus bevel-end borewell.
Do not order bevel on a JJM house-connection that the plumber will thread. Do not order bevel on a fire hydrant that the laying spec grooved. Do not order a 30° API mouth on a spool whose flanges were machined to B16.25, unless the WPS accepts that mismatch.
Hydraulic barrel tube is rarely bevelled. Dada Nagar shops weld ports on the OD. They do not butt-weld the barrel end as line pipe.
Geometry by code and wall
Read the invoked code and approved joint detail before choosing an end preparation. ASME B16.25-2022 covers welding bevels, internal and external shaping of heavy-wall components, and a separate preparation family for a GTAW root pass. The word bevel supplies no angle, land, or wall transition; copy the applicable figure from the adopted edition and WPS.
The API 5L standard page on this site offers plain, 30° bevel, or threaded with couplings. That 30° call-out is the line-pipe finish already printed there. It is not a B16.25 single-angle bevel. Write the code on the PO so the mill does not pick the cheaper cutter.
| Order the end as | Governing reference | Wall or product note | Typical Kanpur use |
|---|---|---|---|
| Square / slight chamfer | B16.25-2022 / joint detail | Only where the adopted figure calls for it | Thin-tube fit-up per drawing |
| Single-angle bevel | B16.25-2022 / WPS | Use the angle and land from the adopted figure | Process spools at Panki |
| Compound bevel | B16.25-2022 / WPS | Use the heavy-wall geometry named by the piping class | Heavy-wall headers |
| 30° line-pipe bevel | API 5L end finish on this site | When the PO names API 5L bevel | Oil and gas or water transmission |
| Plain end | PO / laying spec | Socket, cut, or mechanical joint | JJM fittings, field trim |
| Threaded and coupled | IS 1239 / borewell drawing | Small NB water or casing column | Borewell and plumbing |
B16.25 gives a separate preparation family for a GTAW root pass. Use the adopted edition and WPS to select its angle, land, and internal contour; do not reuse a general bevel dimension.
How to specify the end on an RFQ
A line that says "bevelled" with no angle, land, or code lets mismatched ends reach the fit-up bench. Write the drawing number. Attach the WPS excerpt if the fabricator already qualified one.
- Product: process, standard, grade, NB or OD, wall or schedule, length, quantity.
- End: plain, bevel, or T&C. If bevel, name B16.25-2022 or API 5L and the figure or angle.
- Root face / land, included angle, and any internal counterbore or taper.
- Alignment and cleanliness. End caps. No chain marks on the land.
- Documents: EN 10204 3.1 MTC, heat number. Form III-A if the line is an IBR steam pipe, Form III-B if it is a tube, Form III-C if it is a mounting or fitting.
- Inspection: TPI by SGS, Bureau Veritas, Lloyds, or TUV when the RFQ names the agency.
- Delivery: ex-warehouse Kanpur or FOR destination. GST 18% extra.
Worked mass on a 3 inch Schedule 40 spool
The site schedule comparison uses 3 inch OD 88.9 mm and Sch 40 wall 5.49 mm. W = (88.9 − 5.49) × 5.49 × 0.02466 = 11.29 kg/m. A 6 m length is 67.74 kg. Forty lengths are 2.71 MT.
The seamless price list band for 3 inch Sch 40 is ₹78-96 per kg as of 24 May 2026, ex-warehouse Kanpur, GST 18% extra. That steel line is about 2.71 × 78,000 = ₹2.11 lakh to 2.71 × 96,000 = ₹2.60 lakh before freight and any extra bevel cut.
Wall 5.49 mm determines which adopted B16.25 detail applies. If the PO names B16.25, copy the joint drawing and WPS instead of substituting the 30° API 5L finish. Invoice weighment at the yard is still the commercial mass.
Common mistakes on bevelled pipe
In practice, the first error is a 30° API bevel against a B16.9 fitting cut to B16.25. The fitter then opens the root by grinding and loses the land. Write one code on pipe and fittings.
The second error is a damaged land after a chain lift. Inspect ends on the vehicle. Cap them. A crushed land is a fit-up reject even when chemistry is correct.
The third error is ordering bevel on IS 1239 Medium that the plumber will thread at site. Recutting wastes length and heat marks. Order PE or T&C on that line.
The fourth error is treating schedule number as a pressure rating. Size, wall, material allowable stress, and the design code set the rating. Sch 40 only names the wall used in the mass example above.
Standards for weld-end preparation
ASME B16.25-2022 is the buttwelding-ends standard. Cite the edition on the PO. Existing projects may still name an earlier edition; the purchase order follows the edition adopted by the piping class.
API Specification 5L is the line-pipe product specification. This site's API 5L page lists plain, 30° bevel, or threaded with couplings as the offered end finishes. PSL 1 and PSL 2 remain product-specification levels, not bevel types.
ASME B16.9 governs factory-made buttwelding fittings. The OD at the bevelled end must match the connecting pipe. B16.9 allows a minimum wall on the fitting body of 87.5% of the nominal pipe wall, the same minus tolerance as pipe. IBR steam pipe uses Form III-A. Tubes use Form III-B. Mountings and fittings use Form III-C.
Buying bevel-end pipe in Kanpur
Panki fabricators collect bevelled A106 and ERW spools from Bartan Bazar and weld them the same week. Jajmau, about 10 km, takes more PE and T&C water pipe than bevel. Dada Nagar, about 8 km, is the cylinder cluster and rarely wants a line-pipe mouth.
See steel pipes in Kanpur, MS ERW pipe supplier Kanpur, seamless pipes in Kanpur, and pipe fittings in Kanpur. The Kanpur steel market page is the yard context.
Stock ERW on the glossary lead-time entry leaves in 3-7 days when the size is in the yard. A non-standard compound bevel on heavy wall is a mill cut and follows the mill-direct 14-21 day band.
Bevel versus thread on borewell and fire
Borewell column is usually screwed and socketed or flush-joint. A bevelled casing string is a weld-joint design the well engineer must approve. Do not convert T&C stock to bevel at the yard without that drawing.
Fire mains follow the laying spec: grooved, flanged, or welded. NBC hydrant risers in Kanpur are more often GI with the joint the fire drawing names. A bevelled black Sch 40 mouth is a different system.
See drill and borewell pipes in Kanpur and fire-system pipe. Keep those RFQs off the API 5L bevel line unless the drawing really is a welded casing or a welded hydrant header.
Land, alignment, and incoming checks
Measure angle and land on a sample before the truck is released. Check for dents, rust in the groove, and ovality that will gap the root. The products pages already tell receiving teams to examine bevels for transit damage and to confirm end caps.
Internal mismatch on heavy wall needs the B16.25 internal contour, not a grinder in the trench. If the WPS names a backing ring or a consumable insert, that hardware is part of the end, not a site extra.
Heat identity stays on the body. Do not grind the stencil off while dressing a damaged bevel. Transfer the heat mark first.
Packing bevelled ends for UP and Bihar
Fit end caps. Keep bevels off the trailer bed. Separate ERW and seamless if the lands differ. A mixed load to Lucknow or Patna still needs each bundle tagged with the end finish.
Trucks leave Kanpur for destinations across Uttar Pradesh, Bihar, Madhya Pradesh, Delhi NCR, and Uttarakhand. City pages for Prayagraj, Varanasi, and Gorakhpur reuse the same cap-and-land rule.
Send the RFQ with the end drawing attached. A store that writes "BW" on every line is how a threaded 25 NB plumbing lot arrives with a useless V-groove.
Where you'll meet this in procurement
You will meet Bevel End on size charts, mill quotes, and fitment checks. Cross-check Bevel End against OD, wall thickness or schedule, length, and end finish so the delivered pipe matches flanges, fittings, and pressure duty—not just a familiar nominal label.
Related terms
Related resources
- Pipe schedule chart
- Steel pipe weight calculator
- Buttweld vs threaded
- Threaded vs bevel-end borewell
- Steel pipes in Kanpur
- MS ERW pipe supplier Kanpur
- Seamless pipes in Kanpur
- Pipe fittings in Kanpur
- Kanpur steel market
- Seamless pipe price list
- Borewell pipes in Kanpur
- Fire-system pipe
- Request a quotation (RFQ)
- Back to full glossary
Key points
- Bevel end is a defined weld preparation. Angle, land, and internal contour come from the joint detail and WPS.
- ASME B16.25-2022 supplies the adopted end-preparation figure; copy its angle, land, and internal contour into the WPS and PO.
- API 5L on this site offers a 30° mouth. Do not treat it as an unspecified B16.25 preparation.
- 3 inch Sch 40 is 88.9 × 5.49 mm and 11.29 kg/m on the site schedule comparison. Use its wall with the adopted joint detail.
- Order PE or T&C when the joint is not a butt weld. Cap the land before the truck leaves Kanpur.
Frequently asked questions
Sources
- ASME B16.25-2022. Buttwelding Ends: scope covering welding bevels, heavy-wall shaping, internal-end preparation, and GTAW-root joints (American Society of Mechanical Engineers)
- API Specification 5L. Line pipe end finishes as listed on this site: plain, 30° bevel, or threaded with couplings (American Petroleum Institute)
- ASME B16.9. Factory-made wrought buttwelding fittings; bevel-end OD match and 87.5% minimum wall as used on this site (American Society of Mechanical Engineers)
- Indian Boiler Regulations, 1950. Forms index: III-A steam pipes, III-B tubes, III-C boiler mountings and fittings (Central Boilers Board, Government of India)