Hollow bars

Hollow bars mainly are made as circular but they can be also made in vary shapes. There are many advantages of using hollow bar compare to solid bar not limited to lower price per lengh, lighter weight, lower machining time and lower amount of swarf and many others.
Reduction of machining, boring and turning time is obvious due to wide range of dimeters and wall thickness that hollow bars can be manufactured. Lower costs of tools, lubricants, required power, swarf removing, equipment cleaning and finally labour costs should be also taken into deep consideration.
Material characteristics of the hollow bar can guarantee high resistance to any kind of corrosion, high strengh and high processing factor.
Users considers hollow bars as very effective mean in technical and cost reduction matter (stainless steel hollow bar).

Dimensions for hollow bars:

- diameters (OD): from 50,0 mm to 224,0 mm

- walls thickness (WT): from  7,0 mm to 42,0 mm

Grades for stainless hollow bars:

304, 1.4301, X5CrNi18 10, 0H18N9

304L, 1.4306, 1.4307, X2CrNi18 11, 00H18N10                

316, 1.4401, 1.4436, X5CrNiMo17 12, X5CrNiMo17 13, 0H17N12M2T

316L, 1.4404, 1.4435, X5CrNiMo17 12, X2CrNiMo17 13, 0H17N14M2

316Ti, 1.4571, X6CrNiMoTi17 13, 0H17N13M2T, H18N10MT    

317, 1.4449    

317L, 1.4438 

321, 1.4541, X6CrNiTi18 11, 0H18N10T, 1H18N9T, 1H18N10T 

and others to be agreed

Norms for stainless hollow bar:

ASTM A213/A213M, ASME SA213/SA213M

ASTM A511

DIN 17458

EN 10216-5

NF A 49-317

and others to be agreed