Structural & Mechanical Tubes

Precision & Mechanical Tube

Closer tolerance steel tube for machined parts, rollers, sleeves, cylinders, bushings and equipment components.

Product Overview

Tube ordered by tolerance, surface and delivery condition

Himount supplies precision and mechanical steel tube for buyers who need more than ordinary pipe dimensions. Orders are reviewed against outside diameter, inside diameter, wall thickness, straightness, cut length, surface finish, mechanical properties and delivery condition before quotation.

EN 10305Precision tube reference
A519Seamless mechanical tubing
A513ERW mechanical tubing
E355Common precision grade
Bright precision mechanical tube stockMachined end mechanical steel tubesMechanical steel tube bundles with labels

Key Specifications

Product formsCold drawn precision tube, cold rolled precision tube, seamless mechanical tube, ERW mechanical tube, honed or machined tube by drawing.
Primary standardsEN 10305 series, ASTM A519, ASTM A513, DIN 2391 and GB/T 3639 project references.
Common gradesE235, E355, SAE 1020, SAE 1026, ST52, 20#, 45# and project-specified carbon or low alloy steel grades.
Manufacturing routeSeamless, welded, cold drawn, cold rolled, normalized, annealed or stress relieved route according to drawing and mechanical requirement.
Tolerance focusConfirm OD, ID, wall thickness, ovality, straightness, cut length, surface roughness, end finish and whether machining allowance is needed.
Delivery conditionBK, BKW, BKS, GBK, NBK or equivalent delivery condition terms can be used when required by EN/DIN-style precision tube orders.
Order detailsProvide standard, grade, OD, ID or wall thickness, tolerance, length, surface, heat treatment, end finish, quantity, MTC, packing and destination port.

Typical Applications

Where precision and mechanical tube is specified

Machined componentsSleeves, bushings, shafts, spacers, rollers and parts that require controlled OD, ID, wall thickness or machining allowance.
Hydraulic and cylinder workCylinder bodies, honed tube blanks, piston-related parts and assemblies where surface and dimensional consistency matter.
Equipment manufacturingRoller systems, machinery frames, automotive parts, agricultural equipment and industrial components.
Tolerance note

Precision tube RFQs should state whether the controlled dimension is OD, ID, wall thickness, concentricity, straightness, or final machined size.

Delivery condition note

Confirm cold drawn, cold rolled, normalized, annealed, stress relieved, BK, BKW, BKS, GBK or NBK condition when these terms affect final use.

International Model Search Index

Common standards, grades and RFQ terms

Standards and grade calls
EN 10305-1 E355 tubeEN 10305-2 welded precision tubeASTM A519 1026 mechanical tubingASTM A513 mechanical tubeDIN 2391 ST52 tubeGB/T 3639 precision tubeE235 precision steel tube
Tolerance and order phrases
cold drawn seamless tubecold rolled precision tubehoned tube blankID controlled tubeOD tolerance tubecut to length mechanical tube
Buyer search phrases
EN10305 precision tube supplierE355 precision tube exporterASTM A519 mechanical tubingDIN2391 ST52 tubecold drawn steel tubemechanical tube for rollers

Buyer FAQ

Questions to settle before quotation

What makes precision tube different from standard pipe?

Precision tube orders usually control OD, ID, wall thickness, straightness, surface and delivery condition more closely than general pipe orders.

Which standards are common?

EN 10305 is common for precision steel tube, ASTM A519 for seamless mechanical tubing, ASTM A513 for ERW mechanical tubing, and DIN 2391 or GB/T 3639 may appear in drawings.

What delivery condition should be confirmed?

Confirm cold drawn, cold rolled, normalized, annealed, stress relieved, BK, BKW, BKS, GBK or NBK condition when these terms are used in the order.

What information is needed for quotation?

Provide OD, ID or wall thickness, tolerance, length, grade, standard, surface, end finish, straightness, quantity, MTC, packing and destination port.

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Send RFQ for Precision & Mechanical Tube

Share OD, ID or wall thickness, tolerance, grade, delivery condition, quantity, MTC and destination details.

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