Evidence
- Inspection certificate EN 10204-3.1, page 1 of 2, dated 2026-08-14, issued by Shanxi Baolongda Forging Co., Ltd.: material ASTM A694 F65 to ASTM A694/A694M-16(2022); hot forging from 1180 °C down to 900 °C with a forging ratio of 3 or more; quenched at 920 °C and tempered at 650 °C; items Flange NPS42-CL2500 WN.RTJ (2 pcs), Blind Flange NPS42-CL2500 BL.RTJ (2 pcs) and Blind Flange NPS48-CL2500 BL.RTJ (2 pcs).
- Same page, chemical analysis to ASTM A751-25 - heat, raw-material and product analysis; product analysis C 0.10 %, Si 0.19 %, Mn 1.22 %, P 0.007 %, S 0.001 %, V 0.049 %, Nb 0.026 %, carbon equivalent 0.39 against the 0.43 maximum printed on the certificate.
- Same page, mechanical properties to ASTM A370-24a on a transverse round specimen (Ø12.5 mm, gauge length 50 mm) taken at 1/2 T: Rp0.2 468 MPa, Rm 575 MPa, elongation 30 %, reduction of area 77 %; hardness 194 / 188 / 190 HBW on the flange and 186 / 190 / 184 HBW in the ring groove; Charpy V-notch at −29 °C on 10 × 10 × 55 mm specimens 304 / 269 / 289 J, average 287 J; grain size 8.0.
- Same page, notes and inspection conclusion: fully killed and fine grained; NACE MR0175/ISO 15156; visual inspection, surface crack inspection, ultrasonic test, magnetic particle test and dimensional check accepted; ring groove roughness Ra 1.6 µm maximum, accepted; no welding was done to the material.
- Test report of Shanxi Sanwei Metal Shaping Testing Technology Co., Ltd., pages 3 and 4 of 7: tensile test at 24 °C on a transverse specimen of 12.47 mm diameter - yield strength 468 MPa against 450 MPa minimum, tensile strength 575 MPa against 530 MPa minimum, elongation 30 % against 20 % minimum, reduction of area 77 %; impact test at −29 °C on 10 × 10 × 55 mm transverse specimens with a 450 J pendulum - 304, 269 and 289 J.
- Inspection record of finished products dated 2026/08/14, Flange NPS42-CL2500 WN.RTJ, ASTM A694 F65, design code 'as per DWG', quantity 4 as printed: specified and measured - O 1830 mm (1831.0-1832.0), W 1650 mm (1649.0), R 1170 mm (1170.4-1170.5), tf 343 mm (345.7-346.2), Y 555 mm (557.5-557.7), A 1067 mm (1068.6-1069.4), B 939.0 mm (938.6-939.4); 28 bolt holes; marking, coating, visual and packing passed; hardness 196 / 181 / 191 HBW on the flange body and 191 / 191 / 201 HBW in the RTJ groove.
- Ultrasonic examination report dated 2026-08-08: Flange NPS42-CL2500 WN.RTJ (2 pcs) and Flange NPS48-CL2500 WN.RTJ (4 pcs), quenched and tempered, examined to ASME V and ASTM A388 by the direct contact method at 2.25 MHz with a GE USM36L, sensitivity Φ2 mm by the DGS method; both items acceptable, and no recordable indication in any of the six forgings.
- Photographs taken at our plant before shipment: a machined RTJ blind flange of the order, and the flanges wrapped, bolted and strapped onto steel cradles with lifting lugs.
Applies when
These values apply to this one order and its heat only: ASTM A694 F65, quenched and tempered, Class 2500 RTJ weld neck and blind flanges in NPS 42 and NPS 48, Charpy-tested at −29 °C. Class 2500 above NPS 12 is outside the ASME B16.5 tables, so these flanges were forged to the project drawing; send your drawing and design calculation with the RFQ, together with the grade, impact test temperature and any NACE requirement.
Limits
These are one order's results for one heat - not typical, minimum or guaranteed values for A694 F65 or for our flanges. The certificate is our own EN 10204 3.1 document, the laboratory report covers only the tensile and impact tests it lists, and no third-party inspector's certificate is shown here. The documents shown are part of the order's file, not the complete set: the four NPS 48 weld neck flanges, for example, are not listed on the certificate page shown. The customer, project, purchase order, drawing, heat, lot and report numbers and all personal names and signatures are blacked out to keep the order confidential.