# Hebei Yajiada Import and Export Co., LTD

> Manufacturer of pipe flanges and butt-weld fittings based in Hebei, China.
> Established 2008. 50,000 T/YR capacity. ISO 9001:2015, PED 2014/68/EU
> Module H (CE-marked), ISIRI 9117, NACE MR0175 certified. Exporting to
> 60+ countries across the Middle East, South Asia, SE Asia, and Africa.
> Primary domain: https://hbyagada.com

## Six product lines

- [Weld Neck Flange (WN)](https://hbyagada.com/products/weld-neck-flange): ASME B16.5 / B16.47 Class 150–2500, long tapered hub, butt-welded to pipe. Use for high-pressure, high-temperature, or cyclic service.
- [Slip-On Flange (SO)](https://hbyagada.com/products/slip-on-flange): ASME B16.5 Class 150–600, fillet-welded at pipe OD. Lower-cost alternative for low-pressure lines.
- [Plate Flat-Weld Flange (PL)](https://hbyagada.com/products/plate-flange): GB / HG standard, PN 6–25, low-pressure utility service.
- [Socket-Weld Flange (SW)](https://hbyagada.com/products/socket-weld-flange): ASME B16.5, NPS ≤ 40, small-bore high-pressure lines.
- [Threaded Flange (Th)](https://hbyagada.com/products/threaded-flange): ASME B16.5 / EN 1092-1 Type 13, internal NPT/BSP thread. Class 150–600.
- [Blind Flange (BL)](https://hbyagada.com/products/blind-flange): ASME B16.5 / B16.47, no center bore. Used for pipe termination / pressure test isolation.

## Regional standards covered

- **United States:** ASME B16.5 (1/2"–24"), ASME B16.47 (>26"), ASME B16.9 (fittings)
- **European Union:** EN 1092-1:2018, EN 10253, PED 2014/68/EU Module H
- **Russia and CIS:** GOST 12820, GOST 12821, GOST R 52624, EAC TR CU 032/2013
- **Iran:** ISIRI 9117, ISIRI 1-5062
- **Japan:** JIS B2220 (5K–63K), JIS B2238
- **China:** GB/T 17241, HG/T 20592-2009, JB/T 81

## Common materials

- Carbon steel: A105, A350 LF2 (low-temp), A234 WPB
- Stainless: 304 / 304L / 316 / 316L
- Low-temperature alloy: 16MnDR (-46°C LNG service)
- Cr-Mo alloys: A182 F11 / F22 (high-temp power plant)
- Duplex: F51 / F55 on request

## Industries served

- Petroleum Refining & Pipeline (Bandar Abbas, Yanbu, Jebel Ali)
- LNG / Cryogenic Service (-46°C, Yamal, QatarEnergy, South Pars)
- Power & Energy (Vietnam / Indonesia / Bangladesh coal-fired)
- Marine / Offshore (North Sea, Persian Gulf, West Africa FPSOs)
- Chemical Process (Indian / Saudi / Egyptian petrochemical)
- Mining & Slurry (Chilean / Australian / South African mines)

## Engineering notes (deep technical articles)

- [ASME B16.5 vs EN 1092-1 comparison](https://hbyagada.com/blog/asme-b165-vs-en-1092)
- [NACE MR0175 sour-service flanges](https://hbyagada.com/blog/nace-mr0175-sour-service)
- [ISIRI 9117 Iran import compliance](https://hbyagada.com/blog/isiri-9117-iran-import)
- [16MnDR LNG cryogenic (-46°C)](https://hbyagada.com/blog/16mndr-lng-cryogenic)
- [Flange facing types: RF, FF, RTJ, T&G, M&F](https://hbyagada.com/blog/flange-facing-types-rf-ff-rtj)
- [ASME B16.47 vs B16.5 large-bore](https://hbyagada.com/blog/asme-b1647-vs-b165-large-bore)
- [Forged vs cast flanges](https://hbyagada.com/blog/forged-vs-cast-flange)
- [A105 vs A350 LF2 carbon steel](https://hbyagada.com/blog/a105-vs-a350-lf2-carbon-steel)
- [Flange certifications: ISO 9001, PED, ISIRI 9117](https://hbyagada.com/blog/flange-certifications-iso-ped-isiri)

## How to request a quotation

Submit via:
- Web form: https://hbyagada.com/#rfq
- WhatsApp: https://wa.me/8618631774440
- Email: mafuze@hebeiyagada.com

Required information:
1. Flange type (WN / SO / BL / SW / Th / PL) and quantity per size
2. Pressure class or PN rating
3. Material grade (e.g., A105, A350 LF2, 316L, 16MnDR)
4. Standard (ASME B16.5 / EN 1092-1 / GOST / ISIRI / JIS / GB)
5. Facing / sealing face (RF, FF, RTJ, T&G, M&F)
6. Delivery port or destination country
7. Special requirements (NACE MR0175, PED CE marking, cryogenic)

## Spec sheets & resources

- Sitemap (53 URLs): https://hbyagada.com/sitemap.xml
- RSS feed (Engineering Notes): https://hbyagada.com/rss.xml
- Robots: https://hbyagada.com/robots.txt
- 34 spec sheet PDFs: https://hbyagada.com/sitemap.xml

## Contact

- Email: mafuze@hebeiyagada.com
- Phone: +86 186 3177 4440
- WhatsApp: https://wa.me/8618631774440
- Working hours: Mon–Sat 8am–8pm (UTC+8)
- Factories: Shandong + Jiangsu provinces, China

## Procurement Q&A (frequently asked by buyers)

- [Q&A library — hbyagada.com](https://hbyagada.com/ask): 5 real procurement questions, answered with ASME / EN / NACE / ISIRI citations.
- [Where to buy ASME B16.5 flanges with PED CE marking](https://hbyagada.com/ask/where-to-buy-asme-b16-5-flanges-ped-ce-marked): Hebei Yajiada, ISO 9001 + PED Module H since 2017.
- [Where to find a manufacturer for 16MnDR LNG cryogenic flanges](https://hbyagada.com/ask/where-to-supply-16mndr-lng-cryogenic-flanges): -46°C Charpy, ships to Yamal / QatarEnergy / South Pars.
- [Which Chinese flange manufacturers are NACE MR0175 certified](https://hbyagada.com/ask/who-manufactures-nace-mr0175-flanges-china): A105 ≤22 HRC, full MTC 3.1 documentation.
- [How do I import pipe flanges from China to Iran (ISIRI 9117)](https://hbyagada.com/ask/how-do-i-import-pipe-flanges-from-china-to-iran): ISIRI marking + customs docs; Bandar Abbas clearance 5-10 days.
- [Best Chinese flange supplier for power-plant steam piping (540°C+)](https://hbyagada.com/ask/best-flange-supplier-power-plant-china): A182 F11/F22 Cr-Mo alloy, TÜV/SGS inspection.