EN10219-2 Non - alloy / Fine Grain Steels Cold Formed Welded Structural Hollow Sections

Product Description

EN10219-1 EN10219-2  Cold Formed Welded Structural Hollow Sections of Non-Alloy and Fine Grain Steels

 

 

Part 1: Technical delivery condition

Part 2: Tolerances, Dimensions and Sectional Properties

 

Structural hollow section manufacturing process:

Structural hollow sections are manufactured by electric welding or submerged arc welding without subsequent heat treatment. Hollow sections manufactured by a continuous process shall not incude the welds used to join the lengths of strip prior to forming the hollow section, except that for helically welded submerged arc-welded (SAW) hollow sections, such welds shall be permitted when tested in accordance with 9.4.3.0 EN10219-1, EN10291-2.

 

Delivery conditions:

The hollow sections are delivered cold formed without subsequent heat treatment except that weld seam maybe in the as welded or heat treated condition

NOTE:  For SAW hollow sections above 508 mm outside diameter it may be necessary to perform a warm shaping operation, which does not affect the mechanical properties, in order to meet the out-of-roundness tolerance requirements.

 

Suitability for hot dip galvanization:

The products are suitbale for hot dip galvanization.
 

 

TABLE 1 Tolerances

Symbol	Unit	Definition
B	mm	Nominal length of side of square hollow section.Nominal length of the shorter side of a rectangular hollow section
C1/C2	mm	Length of corner region of a square or rectangular hollow section
Dmax/Dmin	mm	The maximum and minimum outside diameter of a circular hollow section measured in the same plane
H	mm	Nominal length of the longer side of a rectangular hollow section
M	Kg/m	Mass per unit length
T	mm	Nominal thickness
O	%	Out-of-roundness
T	mm	Nominal thickness
V	mm	Total measured twist

 

TABLE 2 Tolerances

Characteristic	Circular hollow sections	Square and rectangular hollow sections
Outside dimensions (D,B andH)	±1% with a minimum of ±0.5mm and a maximum of ±10mm	Side length (mm)	Tolerance
		H,B ＜100   100≤H,B≤200 H,B＞200	±1% with a minimum of ±0.5mm ±0.8% ±0.6%
Thickness(T)	For D≤406.4mm: T≤5mm ±10% T＞5mm ±0.50mm For D＞406.4mm: ±10% with a maximum of 2mm	T≤5mm ±10% T＞5mm ±0.50mm
Out-of-roundness(O)	2% for hollow sections having a diameter to thickness ratio not exceeding 100①	——
Concavity/convexity②	——	Max. 0.8% with a minimum of 0.5mm
Squareness of side	——	90° ±1°
External corner profile	——	See table 3
Twist(V)	——	2mm plus 0.5mm/m length
Straightness	0.20% of total length	0.15% of total length
Mass(M)	±6% on individual lengths

①Where the diameter to thickness ratio exceeds 100 the tolerance on out-of-roundness shall be agreed.

②The tolerance on convexity and concavity is independent of the tolerance on outside dimensions.

 

TABLE 3 External Corner Profile

Thickness T mm	External Corner Profile C1,C2,or R1 mm
T≤6 6＜T≤10 10＜T	1.6T to 2.4T 2.0T to 3.0T 2.4T to 3.6T

The sides need not be tangential to the corner arcs.

 

TABLE 4 Tolerances on length①

Type of length	Range in mm	Tolerance
Random length	4000 to 16000 with a range of 2000 per order item	10% of sections supplied may be below the minimum for the ordered range but not less than 75% of the minimum of the range
Approximate length	≥4000	﹢50mm 0
Exact length	＜6000 ≥6000 to ≤10000 ＞10000	﹢5mm 0 ﹢15mm 0 ﹢5mm  +1mm/m 0

①The purchaser shall indicate in the enquiry and order the type of length required and the length range or length required.

 

TABLE 5 Tolerances on height of internal and external weld bead for submerged arc welded hollow sections

Thickness(T)	Maximum weld bead height(mm)
≤14.2 ＞14.2	3.5 4.8

 

 

 

Products forms:

CFCHS = cold formed circular hollow section

CFRHS = cold formed square or rectangular hollow section

 

Charecteristics:

- Tolerances on dimensions and shapes

- Elongation

- Tensile strength

- Yield strength

- Impact strength

- weldability (chemical composition)

 

 

Normative references:

EN287-1,       Qualification test of welders - Fusion welding  - Part 1: Steels

 

EN10020-1,   Metallic materials - Tensile testing - Part 1: Method of test at ambient temperature

 

EN10020:2000,  Definition and classification of grades of steel

 

EN10021:1983,  General technical delivery requirements for steel and iron products

 

EN10027-1,    Designation systems for steels - Part 1: Steel names

 

EN10027-2,    Designation systems for steels - Part 2: Numericl systems

 

EN10045-1,    Metallic materials - Charpy impact test - Part 1: Test method

 

EN10052:1993,  Vocabulary of heat treatment terms for ferrous products

 

EN10168,       Steel products - Inspection documents - List  of information and description

 

EN10204,       Metallic products - Types of inspection and description

 

EN10219-2:2006, Cold formed welded structural hollow sections of non-alloy and fine grains steels - Part 2: Tolerances, dimensions and sectional properties

 

EN10246-3,   Non-destructive testing of steel tubes -  Part 3: Automatic eddy current testing of seamless and welded ( except submerged arc welded ) steel tubes for the detection of imperfections.

 

EN10246-5,   Non-destructive testing of steel tubes - Part 5: Automatic full peripheral magnetic transducer/flux leakage testing of seamless and welded ( except submerged arc welded) ferromagnetic steel tubes for the detection of longitudinal imperfections

 

EN10246-8,  Non-destructive testing of steel tubes - Part 8: Automatic ultrasonic testing of the weld seam of electric welded steel tubes for the detection of longitudinal imperfections

 

EN10246-9,  Non-destructive testing of steel tubes - Part 9: Automatic ultrasonic testing of the weld seam of submerged arc-welded steel tubes for the detection of longitudinal and/or transverse imperfections

 

EN10246-10, Non-destructive testing of steel tubes - Part 10: Radiographic testing of the weld seam of automatic fusion arc welded steel tubes for the detection of imperfections

 

EN1056,  Non-destructive testing of steel tubes - Qualification and competence of level 1 and 2 non-destructive testing personnel

 

CR 10261, ECISS information Circular 11 - Iron and steel - Review of available methods of chemical analysis

 

EN10266:2003,  Steel tubes, fittings and steel structural hollow sections - Symbols and definitions of terms for use in product standards

 

EN ISO 377,  Steel and steel products - Location and preparation of seamless and test pieces for mechanical testing (ISO 377: 1997)

 

EN ISO 643,  Steels - Micrographic determination of the apparent grain size ( ISO 643:2003)

 

EN ISO 2566-1, Steels - Conversion of elongation valves - Part 1: Carbon and low alloy steels ( ISO 2566-1:1984 )

 

EN ISO 9001:2000, Quality management systems - Requirements  ( ISO9001:2000)

 

EN ISO 14284, Steel and iron - Sampling and preparation of samples for the determination of chemical composition( ISO 14284:1996)

 

EN ISO 15607, Specification and qualification of welding procedures for metallic materials - General rules ( ISO15607:2003)

 

EN ISO 15609-1,  Specification and qualification of welding procedures for metallic materials - Welding procedure specification - Part 1: Arc welding (ISO 15609-1:2004)

 

EN ISO 15614-1,  Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 15614-1: 2004)