Tubes in FeCrNi and NiCr alloys are, from stock, mainly available in the high performance heat resistant grade 253MA; The following tube sizes are stocked:
 
  Tube size,mm(inch)
OD x wt
Alloy Thread  
40x2.5
(1.57" x 0.1")
253MA 1 ¼” BSP  
33.7x2.5
(1.33" x 0.1")
253MA 1” BSP  
26.67x2.87
(1.05" x 0.11")
Alloy 600 ¾” BSP  
26.67x2.5
(1.05" x 0.1")
253MA ¾” BSP  
25x1.5
(1" x 0.06")
253MA BSP: ½”, ¾”, 1” NPT:½”, ¾”, 1”  
22x1.5
(0.87" x 0.06")
253MA BSP: ½”, ¾”, 1” NPT:½”, ¾”, 1”  
19x1.5
(0.75" x 0.06")
253MA BSP: ½”, ¾”, 1” NPT:½”, ¾”  
15x1.5
(0.59" x 0.06")
253MA

BSP: ½”, ¾”
NPT:½”, ¾”

 
       

Other sizes and other FeCrNi and NiCr alloys are also available.

The tubes are available in lengths up to 13 meters (42.6 feet) or cut to shorter lengths, equipped with a closed end and a thread for protection tubes or connections for the inlet of protection gas, for muffle tubes.

 
 
 
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