Licenses & certificate :

1. Under the license from American Petroleum Institute(API) 5L GRADE B PSL 1 (Line pipes for oil and gas transmission are produced strictly according to the requirements of API Spec 5L, Spec Q1 and ISO 9001.The Line pipe also correspond to the Grade ASTM A-53 B of the ASTM (American society for Testing and Materials) specification.
2. ISO 9001:2015 , For Quality Management System.
3. BSTI (Bangladesh standards and Testing Institution.(General purpose Mild steel Tubes are produced according to the British Standard BS -1387 and Bangladesh standard  BDS- 1031 . Galvanizing  is done according to the British Standard BS-729 which is equivalent to DIN 2444 and IS- 4736.
4. BUREAU VARITAS (For supply Marine Grade pipe in ship building sector)
5. ACCORD (Fire and building safety in Bangladesh) (For using pipe in fire Hydrant system)
6. KGS Quality Action(Malaysia) for use in Steamline with 245 degree Celsius temperature & 25 bar pressure.

API license	Authorized to use API Monogram  for manufacturer of plain end line pipe PSL 1 Grade B since1992. License No: 5L – 0025
API Q1 Certificate	Obtained API specification Q1 for quality management system applies to the manufacturer of Line pipe in 2004. API Spec Registration No: Q1 –0051
ISO 9001:2015 Certificate	Obtained ISO 9001 certification for quality management system applies to the manufacturer  of line pipe in 2004. ISO 9001 Registration No :  0321
Bureau Varitas Certificate (Manufacturer & Type Approval)	Achieve BV CERTIFICATE (Type Approval) of international ship classification society for supplying pipes in shipbuilding sector. Certificate no: 47382/B0BV
BSTI license	Authorized to use”BSTI monogram” on GI, MS (A class) pipes. BSTI License No:  138
ACCORD Approval	NTL is only one approved  company by ACCORD in Bangladesh for supplying pipe in fire hydrant pipe used in RMG sector.
ALLIANCE  Approval	NTL is only one approved  company by ALLIANCE in Bangladesh for supplying pipe in fire hydrant pipe used in RMG sector.
KGS Quality Action (Malaysia)	NTL API pipe is certified for use in Steamline with 245 degree Celsius temperature & 25 bar pressure.