Haihao Group Supplies High-Performance ASME B16.5 Flanges and Spectacle Blinds for Russian Industrial Pipeline Expansion
Haihao Group has completed the inspection and export packaging for a batch of high-precision industrial pipe flanges and spectacle blinds bound for a major engineering project in Russia. The shipment comprises forged Socket Weld (SW) flanges, Weld Neck (WN) flanges, and Spectacle Blinds manufactured in stainless steel and low-temperature carbon steel grades.
To withstand complex operating pressures and extreme sub-zero working temperatures, each component was engineered in full compliance with ASME and ASTM standards, featuring precisely controlled serrated gasket face finishes.
Technical Manifest and Project Specifications
Selecting an experienced ASME B16.5 flange supplier is critical when managing multi-grade piping orders that demand absolute dimensional accuracy and reliable seal integrity. The dispatched items include dual-certified stainless steels (300/316L) as well as impact-tested low-temperature alloys.
ASME B16.5 flange supplier shipping Class 150 Class 300 socket weld weld neck flanges and ASME B16.48 spectacle blinds to Russia
Review the detailed technical specification manifest below:
| Product | Size | Pressure Class | Schedule | Material | Standard | Facing |
| Spectacle Blind FF | 1″ | CL150 | — | A240 304/304L Dual Grade | ASME B16.48 | FF |
| Socket Weld Flange RF | 1-1/2″ | CL150 | SCH XS | A350 LF2 Class 1 | ASME B16.5 | RF |
| Socket Weld Flange RF | 1-1/2″ | CL300 | SCH 40S | A182 F304/304L Dual Grade | ASME B16.5 | RF |
| Weld Neck Flange RF | 1″ | CL150 | SCH 80S | A182 F304/304L Dual Grade | ASME B16.5 | RF |
| Weld Neck Flange RF | 3″ | CL300 | SCH 40S | A182 F316/316L Dual Grade | ASME B16.5 | RF |
Engineering Focus: Machining Finish & Low-Temperature Metallurgy
Industrial piping integrity relies heavily on sealing surface quality. All Raised Face (RF) and Flat Face (FF) flanges in this order feature a stock finish serration of 125–250 AARH (Arithmetic Average Roughness Height). This precise surface profile ensures optimal seating and gasket deformation under compression, preventing leak paths in severe service environments.
As a leading ASME B16.5 flange supplier, Haihao Group pays extra attention to low-temperature metallurgy. For sub-zero Russian conditions, the ASTM A350 LF2 Class 1 socket weld flanges underwent normalizing heat treatment and Charpy V-notch impact testing at -46°C to guarantee toughness under thermal stress.
Quality Assurance & Sea-Worthy Export Packaging
Every single piece in this order underwent non-destructive testing (NDT) and multi-point dimensional validation prior to sealing. As a trusted ASME B16.5 flange supplier, our export quality control protocol includes:
Facing & Bore Tolerance Check: Ultrasonic thickness checking and bore alignment verification matching SCH XS, 40S, and 80S pipe dimensions.
Surface Anti-Corrosion Protection: Stainless steel flanges (A182 F304/304L & F316/316L) underwent pickling and passivation, while carbon/alloy steel items received anti-rust oil coating.
Protective End Caps & Packaging: Hard plastic flange face protectors fitted onto all RF/FF surfaces, packed in customized plywood cases lined with vapor corrosion inhibitor (VCI) bags.
Complete Traceability: Full EN 10204 3.1 Mill Test Certificates (MTC) supplied with heat numbers stamped on each flange rim.
Whether handling high-corrosion chemical lines or freezing gas transport pipelines, working with an established ASME B16.5 flange supplier ensures your project avoids unplanned downtime and costly installation delays.
Request a Fast Quote from Haihao Group
Need certified ASME B16.5 flanges, ASME B16.48 spectacle blinds, or custom forged components for your upcoming project? Partner with a verified ASME B16.5 flange supplier. Contact Haihao Group today for technical consultation and competitive factory-direct pricing.