Material, Quality and Specialization

KRISHNA Engine valves are manufactured under strict quality control norms laid down by ISO following the specification tests of required tolerance before dispatching for market. The grain flow detection by Micro Etch examination, crack-detection and Micro-Sttucture tests are compulsorily gone through to make sure that our products maintain highest of quality. We coat each valve with suitable anticorrosive oil and wrap in anti-rust paper to prolong the life. the Company puts highest emphssis on ensuring the quality of its products. BLW valve has a quality assurance plan in accordance with ISO 9002

  A S H
UNI 39NiCrMo3 X 45 CrSi8 X 55 CrMn-NiN 208
DNI 36NiCMo4 X 45 CrSi98 X 55 CrMn-NiN 208
C 0,35/0,43 0,40/0,50 0,50/0,60
Si 0,15/0,40 2,70/3,00 Max 0,25
Cr 0,60/1, 8,00/10,00 19,50/21,50A
Ni 0,70/1,00 8,00/10,00 0,50/2,75
Mn 0,50/0,80 Max 0,50 70/10,00
S 0,035 0,030 0,030
P 0,035 0,040 0,045
N ---- ---- ----
W ---- ---- ----
Mo 0,15/0,25 ---- ----