"NIPIStroyTEK" LLC accredited testing and research facility has the most sophisticated equipment available for advanced testing of pipelines welding joints, research on the development of new welding procedures and control of welding equipment meeting the most stringent requirements.
The facility’s accreditation is attested by the OAO "STC" Safety.
|p/n||Test method||Requirements specifying document|
|1.||Static mechanical tests:|
|1.1.||Tensile strength of the metal pipes and welding joints.|
|1.1.1.||At normal temperature:
- Base metal
|- Welding joints accord. to GOST 6996-66||GOST 6996-66|
|1.1.2.||Lower temperatures||GOST 11150-84|
|1.1.3.||Elevated temperatures,||GOST 9651-84|
|1.1.5.||Thin sheets||GOST 11701-84|
|1.1.8.||Steel reinforcement static tension test||GOST 12004-81 (1995)|
Reinforcement and welding inserts
|1.3.||Compressive strength||GOST 25.503-97|
|1.4.||Bending strength||GOST 14019-80
Mechanical impact testing
|2.1.||Toughness of metal pipes and welds|
|2.1.1.||The blow-bending strength at low, ambient and elevated temperatures with||GOST 9454-78
|2.2.||Propensity to mechanical aging impact test method||GOST 7268-82|
|3.||Methods for measuring the hardness|
|3.1.||Brinell (ball-pressure)||GOST 9012-59|
|3.3.||Vickers (regular four-sided diamond pyramid tip indentation)||GOST 2999-75
|3.4.||Rockwell hardness (diamond cone or steel ball tip indentation in the surface of the sample (the product)||GOST 9013-59
|3.5.||By Super-Rockwell (diamond cone or steel ball indentation in the surface of the sample (the product)) ||GOST 22975-78
|3.8.||Micro hardness (diamond tips indentation) ||GOST 9450-76
|6.||Materials structure studying methods|
|6.1.1.||Quantifying nonmetallic impurities||GOST 1778-70
|6.1.2.||Grain grading||GOST 5639-82,
|6.1.3.||Determination of the depth of decarbonized layer||GOST 1763-68|
|6.1.4.||Ferrite phase content determination||GOST 11878-66|
|6.1.6.||Determining the degree of pearlite spheroidization||OST 34-70-690-84|
Macroscopic analysis, including analysis ofbreaks in welds
Analysis of fracture by stereoscopic fractography
|7.||Methods for determination of elements|
Operational manual |
|7.1.2.||Photoelectric spectral analysis||GOST 18895-97
Special types (methods) tests *
* Identification of the banded structure of ferrite-pearlite steels in accordance with GOST 5640;
* Static bending tests in accordance with the Bovanenkovo - Ukhta main gas pipeline welding Instructions for operating pressures up to 11 8MPa;
* Determination of diffusion hydrogen content in the weld metal and the welding metal joints according to GOST 23338-91.
Range of engineering work related to the qualification testing of welding procedures for the construction of treatment plants manifold pipelines to transport gas (GTU), "Portovaya" CS.
Development and research validation of annular casing joints welding performed in the process of the maintenance overhaul at OAO "TNK-Nyagan."
Expert evaluation of fillet welding repair technology used to weld manifold collector to pup joints of GPA-25.0110-910 and GPA-28.0110-920 CS compressor sets at the "Babaevskaya" and the "Elizabeth" CS of the North European Gas Pipeline.
Development of automatic welding procedures for pipe joints welding at the offshore stretch of the pipeline in the process of Arkutun-Dagui (the "Sakhalin-1") field facilities construction... Welding procedures qualification, and the automatic ultrasonic testing attestation.