20px arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\"> JIS G3441 alloy steel tubes are widely used in mechanical structure, natural gas, oil, water transportation, chemical fertilizer equipment with boiler ect.

1 arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\"> Application of  JIS G3441 alloy steel tubes:

20px arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\"> mechanical structure, natural gas, oil, water transportation, chemical fertilizer equipment with boiler, petroleum cracking, geological drilling, oil drilling, etc.

1 arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\"> Quality Standard and Steel Grade:

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JIS G3441 SCr420TK

JIS G3441 SCM415TK

JIS G3441 SCM418TK

JIS G3441 SCM420TK

JIS G3441 SCM430TK

JIS G3441 SCM435TK

JIS G3441 SCM440TK

1 arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\"> Size range of JIS G3441 Alloy Steel Tubes:

20px arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\"> Tolerance on Outside Diameter in JIS G3441 20px arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\" width=\"500\"> O.D.(mm) Tolerance(%) <13 ±0.25 >13-25 ±0.40 >25-40 ±0.60 >40-65 ±0.80 >65-90 ±1.00 >90-140 ±1.20 >140 By agreement

20px arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\"> Tolerance on Wall Thickness in JIS G3441 20px arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\" width=\"500\"> W.T.(mm) Tolerance <=4 -0.5,+0.6 >4 -12.5%, +15%

20px arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\"> How to test JIS G3441 Alloy Steel Tubes:

20px arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\">

Chemical Component Analysis, Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation)

Technical Properties (Flattening Test, Flaring Test, Bending Test, Hardness Test, Blow Test, Impact Test etc)

Exterior Size Inspection.

Mill Test Certificate:EN 10204/3.1B

Delivery Condition:BKS, NBK,BK ,BKW, GBK(+A), NBK(+N), BK(+C)

1 arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\"> JIS G3441 Alloy Steel Tubes Chemical composition Limits(%) 20px arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\"> Steel grade Steel grade(old) C Si Mn P S Cr Mo SCr420TK – 0.18~0.23 0.15~0.35 0.60~0.85 <0.030 <0.030 0.90~1.20 0.15~0.30 SCM415TK – 0.13~0.18 0.15~0.35 0.60~0.85 <0.030 <0.03 0.90~1.20 0.15~0.30 SCM418TK – 0.16~0.21 0.15~0.35 0.60~0.85 <0.030 <0.030 0.90~1.20 0.15~0.30 SCM420TK – 0.18~0.23 0.15~0.35 0.60~0.85 <0.030 <0.030 0.90~1.20 0.15~0.30 SCM430TK As STKS1 0.33~0.38 0.15~0.35 0.60~0.85 <0.030 <0.030 0.90~1.20 0.15~0.30 SCM435TK As STKS3 0.33~0.38 0.15~0.35 0.60~0.85 <0.030 <0.030 0.90~1.20 0.15~0.30 SCM440TK – 0.38~0.43 0.15~0.35 0.60~0.85 <0.030 <0.030 0.90~1.20 0.15~0.30

1 arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\">  Packing:

20px arial, helvetica, sans-serif; white-space: normal; color: rgb(85,85,85); vertical-align: baseline; border-top: 0px; border-right: 0px; word-spacing: 0px; padding-top: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px\">

Plastic plugs in both ends, Hexagonal bundles of max. 2,000kg with several steel strips

Two tags on each bundle

Wrapped in waterproof paper

PVC sleeve, and sackcloth with several steel strips