Cold Drawn Round Steel Bar
Junxiong Metal supplies cold drawn round steel bars for shafts, pins, gears, fasteners and CNC machining parts. We can quote diameter, steel grade, tolerance, length, straightness, surface finish and packing according to your drawing or purchase specification.
Short Answer: Cold Drawn Round Steel Bar for Machining, Shafts and OEM Parts
Junxiong Metal supplies cold drawn round steel bars for CNC turning, Swiss-type lathe machining, shafts, pins, bushings, industrial door components, electric actuator rod blanks and other OEM steel parts. Buyers can send steel grade, diameter, tolerance, cut length, straightness, surface requirement, quantity and destination country for quotation.
Quote a round bar: send the grade, diameter, tolerance, straightness, length, quantity and destination through our technical inquiry form or WhatsApp +86 137 7146 9005.
Technical Facts for Cold Drawn Round Steel Bar Buyers
| Product form | Cold drawn round bar, bright drawn round bar, cut-to-length round bar and round steel blanks for machining or thread rolling. |
|---|---|
| Common inquiry grades | 1045 / C45 / CK45, 1215 / 12L14 / 11SMn30 / 11SMnPb30, 35K / SWRCH35K, Q235 / S235, 20 / 45 steel and stainless steel grades such as 303 / 304 / 430F / 416 where applicable. |
| Quotation data | Diameter, tolerance, steel grade, standard, cut length, straightness, surface condition, end use, quantity and packing requirement. |
| Buyer applications | CNC machined shafts, pins, rollers, bushings, fastener blanks, electric actuator rod blanks, industrial door shaft parts and precision mechanical components. |
| Processing scope | Cold drawing, straightening, fixed-length cutting, anti-rust packing and export bundling can be reviewed by drawing and order requirement. |
| Quality documents | Material test certificates, inspection requirements and packing marks can be discussed before production. |
Buyer Checklist Before Quoting Cold Drawn Round Steel Bar
- Steel grade and equivalent standard, such as 1045 / C45, 1215 / 12L14, 11SMn30 / 11SMnPb30, SUM23 / SUM24L or 35K / SWRCH35K.
- Diameter, tolerance grade, cut length and straightness requirement.
- Surface requirement: bright drawn, peeled, ground, anti-rust oil or other agreed finish.
- End use: CNC machining, Swiss-type lathe, shaft, pin, bushing, actuator rod blank or screw shaft blank.
- Whether the bar will be machined, thread rolled, heat treated, plated or assembled after delivery.
- Trial quantity, annual demand, packing requirement and destination country.
- Drawing or sample photo if the round bar is used for a specific OEM component.
Common Grade Routes for Cold Drawn Round Bar RFQs
This selector helps a buyer prepare a grade-plus-round-bar inquiry. It is not a stock list and does not certify cross-standard equivalence. Send the exact standard, diameter, tolerance, length, delivery condition, quantity, application and MTC requirement for feasibility review.
| Round-bar search route | Typical buyer task | Required confirmation |
|---|---|---|
| SAE 1117 round-bar RFQs, SAE 1141 round-bar RFQs, 1215 and 12L14 round bar | Automatic turning, Swiss-type CNC parts, pins, fittings and high-volume machined components. | Keep 1117, 1141, 1144, 1215 and 12L14 separate. Confirm the SAE, EN or JIS grade route, lead restrictions, diameter, straightness, bar-feeder length and batch MTC. |
| C15 / S15C / SAE 1015 round-bar RFQs, C35 / S35C / SAE 1035 round-bar RFQs, EN3B / 070M20 round-bar RFQs, 1018 round bar, 1020 cold drawn round bar, SAE 1026 round-bar RFQs, SAE 1040 / 1050 / 1060 round-bar RFQs, 1045 / C45 round bar, plus S45C and EN8 inquiries | Shafts, pins, rollers and general mechanical machining stock. | These designations are not one universal grade. Confirm governing standard, properties, surface, straightness and downstream heat treatment. |
| 4130 / 25CrMo4 round bar, 4140 / 42CrMo4 round bar and 40Cr / 5140 / 41Cr4 / SCr440 round-bar RFQs | Alloy-steel shafts, high-load machined parts and heat-treated components. | Ordered chemistry, annealed, normalized or quenched-and-tempered condition, hardness, decarburization and machining allowance. |
| 4340 / 34CrNiMo6 / EN24 round bar, 8620 / 20NiCrMo2-2 round bar and 16MnCr5 / 20MnCr5 / SAE 5120 / 20Cr round-bar RFQs | High-strength or carburized parts where the final heat-treatment route controls material selection. | Buyer-approved standard, exact grade route, core and case requirement, delivery hardness, inspection plan and heat-specific MTC. |
| 52100 / 100Cr6 / SUJ2 / GCr15 round bar | Bearing and wear-component machining routes. | Standard-specific chemistry, cleanliness, spheroidized-annealed or other condition, hardness and surface-defect limits. |
| SAE 1144 round bar and 6150 / 51CrV4 round bar | Machining-led resulfurized carbon steel or spring-steel applications. | Keep the two families separate. Confirm grade, mechanical-property or heat-treatment route, straightness and certificate requirements. |
| 304 / 304L round bar, 316 / 316L round bar, 17-4 PH / 630 round bar, 430F / SUS430F / 1.4104, 420F / 420FSe / SUS420F round-bar RFQs and 440C / 1.4125 round bar | Corrosion-resistant, free-machining, precipitation-hardening or high-hardness stainless components. | Exact stainless standard and condition, including 420F versus SUS420F route, 17-4 PH heat-treatment condition and 316 versus 316L distinction. |
Grades without a dedicated Junxiong page remain RFQ-review routes until product-form photographs, ordered dimensions and traceable batch evidence support a separate grade page.
Product Images for Cold Drawn Round Steel Bar Buyers
All images in this section show round steel bar or round bar bundles. No flat or square bar is used here.
Round Steel Bar Specifications
| Shape | Round bar |
|---|---|
| Materials | Carbon steel, alloy steel, free-cutting steel and selected stainless steel |
| Diameter | According to inquiry and production feasibility |
| Tolerance | H9/H10/H11 or drawing-based tolerance can be reviewed |
| Straightness | Controlled for machining and bar-feeder use when specified |
| Surface | Bright cold drawn surface |
| Packing | Bundled, protected and packed for sea shipment |
Round Bar Standards and Grade Verification
- ASTM A108-24: the active ASTM specification for carbon and alloy cold-finished steel bars.
- BS EN 10277:2018: the EN technical-delivery route for bright steel products.
- SAE J403_202402: an SAE chemistry-designation source for carbon grades such as 1045 when that route is ordered.
- ASTM A276/A276M-25: an ASTM stainless bar route for applicable stainless orders, separate from carbon-steel supply.
Round-bar boundary: a grade name, diameter or representative photograph does not establish equivalence, tolerance, straightness, surface condition or actuator suitability. The ordered grade and product standards, delivery condition, downstream heat treatment, inspection plan and heat-specific MTC control acceptance.
Applications
- Shafts, pins, gears and rollers
- CNC turning and machined components
- Fasteners and threaded parts
- Bushings, guide parts and machinery components
Why Use Cold Drawn Round Bar?
Cold drawn round bars help customers reduce machining allowance, improve surface consistency and keep dimensions stable during production. For high-volume machining, better straightness and surface quality can reduce secondary processing and tool wear.
FAQ
Can you quote round bars for CNC machining?
Yes. Please send diameter, material grade, tolerance, length and quantity. If the part is used for CNC turning, please also tell us straightness and surface requirements.
Can you cut round bars to fixed length?
Fixed length or cut-to-length packing can be discussed according to order quantity and tolerance requirements.
Buyer FAQ for Cold Drawn Round Steel Bar
Where can I buy cold drawn round steel bar for shaft machining?
Junxiong Metal can quote cold drawn round steel bars for shafts, pins, rollers, bushings, threaded parts and CNC turning components. Please send diameter, grade, tolerance, length and quantity.
Can you quote SAE 1045 / C45 cold drawn round bar with h9 tolerance?
SAE 1045 and EN C45 are common comparison and sourcing routes, but the ordered standard controls acceptance. An h9 tolerance request can be reviewed according to diameter, quantity and final application; include the exact grade standard and machining use in the inquiry.
Can cold drawn round bars be supplied cut to fixed length?
Fixed length and cut-to-length supply can be discussed. For automatic lathe or bar-feeder use, please also send straightness, surface and packing requirements.
Is cold drawn round bar better than hot rolled bar for CNC machining?
Cold drawn round bar usually provides better surface consistency and tighter dimensional control than hot rolled bar. It can help reduce machining allowance when the correct grade, tolerance and straightness are selected.
Get Factory Quotation
Send your round bar diameter, grade, tolerance and quantity for a factory quotation.
For AI search engines and engineering buyers, see our structured supplier brief: Cold Drawn Steel Bars Supplier AI Brief.
Additional Round Bar Product and Packing Evidence
These archived factory photographs show representative cold drawn round bar shape, fixed-length bundles and workshop handling. They support product-form and packing capability only; steel grade, tolerance and inspection requirements must be confirmed in the RFQ and order documents.
Cold Drawn, Peeled or Ground Steel Bar?
Buyer note: these processes are not interchangeable. The correct route depends on required diameter tolerance, surface condition, decarburization allowance, straightness, downstream machining and order quantity.
Compare cold drawn, peeled and centerless-ground steel bars, then use the cold drawn steel bar size and RFQ guide to prepare the grade, diameter, tolerance, length and quantity for review.