Limestone Quarry Plant

One of the Top 500 enterprises in China foreign trade

QCCO was approved as a member of “China Association for Contracting Projects Abroad “and granted a membership certificate on Sep 28,2005; “Credibility Rating AAA certificate in Foreign Trade” was granted to QCCO by China Shippers’ Association


ASTM A333 Grade 6 pipe,A333 Gr.6 - Alloy pipe


When Grade 6 is ordered under this specification, the supply of an alloy grade requires the addition of any element other than those listed for the ordered grade is not permitted. The addition of elements required for de-oxidation of the steel is permitted on Mechanical Requirements, Tensile Requirements etc.

ASTM A333 Grade 6 pipe

A333 (Low Temp) Grade 1/6 Seamless Pipe

Outer Dimensions: 19.05mm – 114.3mm
Wall Thickness:2.0mm – 14 mm
Length: max 16000mm
ASTM A333 Grade6 is the specification that covers average quantity of seamless and welded carbon and alloy steel pipe used at low temperatures. 
Application: Seamless and Welded Steel Pipe for Low-Temperature Service.
Steel grade: ASTM A333 Grade 6
A333 Gr.6 -Alloy pipe

ASTM A333 Grade 6

C, Max 0.30
Mn 0.29-1.06
P,Max 0.03
S, Max 0.03
Si, Min Si, Min
A For each reduction of 0.01% carbon below 0.30%, an increase of 0.05% manganese above 1.06% would be permitted to a maximum of 1.35% manganese.


  psi Mpa L T
Y.S,min 35 000 240 22 12
T.S,min 60 000 415    


Stress Relieving of Test Pieces
Metal Temperature
°F °C
5 600
1050 565
1000 540

Packing: Bare packing/bundle packing/crate packing/wooden protection at the both sides of tubes and suitably protected for sea-worthly delivery or as requested.
Inspection and Test: Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive Test, Hydrostatic Test.
Surface treatment: Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting.

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