DIN2391 ST35 BK, BKW, BKS, GBK , NBK Cold Drawn Precision Seamless Steel Pipes
DIN2391 Precision Steel Pipes for Hydraulic system
OD:4-80 (mm) WT0.5-10 (mm) Length 12000mm
1. Standard:
DIN2391 Precision Seamless Steel tubes for precision hydraulic systems
DIN2393 Precision Welded Steel tubes for precision hydraulic systems
2. Steel Grade:
St 30SI, St 30 Al, St35,St45, St52, other materials upon agreement with customers.
3. Production method:
Cold drawn on the seamless steel tubes, to reach high accuracy on the OD and WT tolerance
4.Size range:
O.D.:20-350mm W.T.:1-15mm L:max12000mm
5. Packing:
In Hexagonal Bundles, wth anti-rust oil protection, with seaworthy packing
6.Deliver condition:
1). BK Cold finished (hard)
2). BKW Cold finished (soft)
3). BKS Cold finished and stress relieved
4). GBK Annealed
5). NBK Normalized
Standard and documents reffered to:
DIN 1629 Seamless, circular, unalloyed steel pipes subject to special requirements; technical
delivery conditions
DIN1630 High Performance seamless, circular, unalloyed steel tubes; technical delivery conditions
DIN1651 Free cutting steel, technical delivery conditions
DIN2391 Part 1 Seamless precision steel tubes; dimensions
DIN2445 Part 2 Seamless precision steel tubes subject to fatigue loading, rated for a pressure of 64 to
400 bar
DIN4768 Determination of surface roughness parameters R3, R2 and Rmax, using electric styles
instruments; concepts and measuring conditions
DIN8528 Part 1 Weldability of metallic materials; concepts
DIN17121 Seamless circular steel tubes for structural steel work; technical delivery conditions
DIN17124 Seamless circular fine grain steel tubes for structural steelwork; technical delivery
Conditions
DIN17172 Steel pipes for conveying combustible liquids and gases; technical delivery conditions
DIN17173 Seamless circular tubes made from steel with low temperature toughness; technical
delivery conditions.
DIN17175 Seamless tubes with elevated temperature properties; technical delivery conditions
DIN17179 Seamless circular fine grain steel tubes subject to special requirements; technical
delivery conditions
DIN17204 Seamless circular tubes made from steels for quenching and tempering; technical
delivery condition
DIN17210 Case hardening stel; technical delivery conditions
DIN17458 Seamless circular austenitic stainless steel tubes subject to special requirements,
technical delivery conditions.
DIN50049 Inspection documents for the delivery of metallic products
DIN50960 Part 1 Electroplated and chemically applied coatings; designation and information in technical
documentations
DIN EN10002 Part1 Tensile testing of metallic materials; method of test at ambient temperture ( including
Amendment AC 1:1990)
DIN EN10025 Hot rolled unalloyed structurall steel products; technical delivery conditions ( including
Amentment A1:1993)
DIN EN10027 Part1 Designation systems for steel; steel names and principal symbols
DIN EN10027 Part2 Designation ystmes for steel; numerical systems
DIN EN10083 Part1 Quenched and tempered steels; technical delivery conditions for special steels
DIN EN10083 Part2 Quenched and tempered steels; technical delivery conditions for unalloyed quality steels
DIN EN10233 Metallic materials; tube; flattening test
DIN EN10234 Metallic materials; tube; drift expanding test
DIN EN10021 General technical delivery conditions for steel and iron products
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