Stainless Steel Mechanical Tubing

Ganyeah Group a professional provider of stainless steel pipe in China, including welded stainless steel tube,our products apply for many industries such as oil and gas, water treatment, mining, food, chemical engineering medicine, paper and pulp.

304/304L Stainless Steel Mechanical Tubing mill covers an area of 100000 square meters, over 300 skillful employees with more than 20 engineers, we have advanced producing equipment and testing device, each year we provide stainless steel pipe over 2000 metric tons.

ASTM A554
304/304L Stainless Steel Mechanical Tubing Technical Data

*Wall tolerance ± 10% of specified wall thickness.

Note 1: Ovality is the difference between maximum and minimum outside diameters measured at any one cross section. There is no additional tolerance for ovality on tubes having a specified wall thickness of more than 3% of the outside diameter.

Note 2: For sizes up to and including 5-in. outside diameter, an ovality tolerance of twice the tabular outside diameter tolerance spread shown is applied one half plus and one half minus to tubes having a specified wall thickness of 3% or less of the specified outside diameter. The average of maximum and minimum outside diameter readings should fall within the outside diameter tolerances as shown in this table.

Note 3: For sized over 5-in. to and including 16-in. outside diameter, when the specified wall thickness is 3% or less of the outside diameter, the ovality shall not exceed 1.5% of the specified outside diameter.

TOLERANCES — OUTSIDE DIAMETER SQUARE AND RECTANGULAR TUBING

MAXIMUM RADII OF CORNERS

Note: For square or rectangular structural tubing with heavier walls, the radius of any outside corner of the section shall not exceed three times the specified wall thickness.

TWIST TOLERANCES

Squareness of Sides
±B = C X 0.006 where:
B = tolerance for out-of-square, and
C = length of longest side.
The straightness tolerance is 0.075 in. in 3 ft.
using a 3-ft. straightedge and feeler gauge.