upstream product categories with leading Chinese white-label/OEM manufacturers.

Upstream product categories with leading Chinese white-label/OEM manufacturers. Where specific white-label clients are publicly named, they are included; otherwise, the table lists the top Chinese OEM suppliers known for supplying these products to global brands, service companies, and distributors.

No.	Product Category	Leading Chinese White-Label/OEM Manufacturers & Noted Clients
1	Drill Pipe	Saigao Group, Jiangsu Shuguang Huayang, Hilong, Shandong Molong, Longway; Shuguang exports to NOV Grantprideco, TSC, Mitsui, US Command, US Superior, US Ptech124
2	Heavy Weight Drill Pipe (HWDP)	Hilong (Wuxi), Shuguang, Saigao Group
3	Drill Collars	Roschen Group, Shandong Molong, Saigao Group3
4	Drill Pipe Tool Joints	Hilong (Wuxi), Shuguang, Longway, Saigao Group24
5	Drill Subs	Hilong, Shandong Molong, Saigao Group
6	Stabilizers	Hilong, Tianhe Oil Group, Saigao Group
7	Drill Bits (Tricone, PDC, Diamond)	Roschen, Hejian Hengji Bit Manufacture, Great Drill Bit, Kingdream, Shear Bits6
8	Casing	Shandong Molong, Dalipal, Baosteel, Tianjin Pipe, Shandong Beyond Petroleum
9	Tubing	Shandong Molong, Dalipal, Baosteel, Tianjin Pipe
10	Oil Country Tubular Goods (OCTG)	Shandong Molong, Dalipal, Baosteel, Hilong, Jiangsu Top Steel
11	Line Pipe	Baosteel, Tianjin Pipe, Shandong Molong
12	Wellheads	Suzhou Douson, Shandong Beyond Petroleum, Kerui, Shengji Petroleum
13	Christmas Trees	Suzhou Douson, Kerui, Shandong Beyond Petroleum
14	Blowout Preventers (BOPs)	Shandong Beyond Petroleum, Kerui, Suzhou Douson
15	Choke & Kill Manifolds	Suzhou Douson, Kerui, Shandong Beyond Petroleum
16	Mud Pumps	BOMCO, Honghua, Kerui, Shandong Beyond Petroleum
17	Pumping Units	Kerui, Shengji Petroleum, Honghua
18	Workover Rigs	Kerui, Honghua, BOMCO, LS-NOW (NOV JV)8
19	Land Drilling Rigs	Honghua, BOMCO, Kerui, LS-NOW, 3H Petroleum Equipment8
20	Offshore Drilling Modules	Honghua, LS-NOW, 3H Petroleum Equipment8
21	Electric Control Systems	Honghua, Kerui, 3H Petroleum Equipment
22	Solid Control Systems	GN Solids Control, Kerui, Honghua
23	Mud Gas Separators	GN Solids Control, Kerui, Honghua
24	Degassers	GN Solids Control, Kerui, Honghua
25	Shale Shakers	GN Solids Control, Kerui, Honghua
26	Desanders/Desilters	GN Solids Control, Kerui, Honghua
27	Centrifuges	GN Solids Control, Kerui, Honghua
28	Artificial Lift Systems	Shengji Petroleum, Kerui, Honghua
29	Wellbore Cleaning Tools	Tianhe Oil Group, Hilong, Roschen
30	Fishing Tools	Tianhe Oil Group, Hilong, Roschen
31	Casing Heads	Suzhou Douson, Shandong Beyond Petroleum, Kerui
32	Casing Hangers	Suzhou Douson, Kerui, Shandong Beyond Petroleum
33	Tubing Hangers	Suzhou Douson, Kerui, Shandong Beyond Petroleum
34	Flanges	Shandong Beyond Petroleum, Baosteel, Tianjin Pipe
35	Elbows	Shandong Beyond Petroleum, Baosteel, Tianjin Pipe
36	Caps	Shandong Beyond Petroleum, Baosteel, Tianjin Pipe
37	Bends	Shandong Beyond Petroleum, Baosteel, Tianjin Pipe
38	Mechanical Pipe	Baosteel, Tianjin Pipe, Shandong Molong
39	Boiler Pipe/Tube	Baosteel, Tianjin Pipe, Shandong Molong
40	Premium Connections	Dalipal, Hilong, Shandong Molong
41	Hard-banding Materials	Hilong, Tianhe Oil Group
42	Anti-corrosion Coatings	Hilong, Shengji Petroleum
43	Well Control Equipment	Suzhou Douson, Kerui, Shandong Beyond Petroleum
44	Extraction Tools	Tianhe Oil Group, Hilong, Roschen
45	Production Trees	Suzhou Douson, Kerui, Shandong Beyond Petroleum
46	Downhole Motors	Tianhe Oil Group, Hilong, Shandong Beyond Petroleum
47	Liner Hangers	Suzhou Douson, Kerui, Shandong Beyond Petroleum
48	Packers	Suzhou Douson, Kerui, Shandong Beyond Petroleum
49	Completion Tools	Hilong, Tianhe Oil Group, Shandong Beyond Petroleum
50	Single Metal Screw Pumps	Shengji Petroleum, Kerui

Notes:

• Many of these manufacturers are API and ISO certified and operate as OEM/white-label suppliers for global oilfield service companies and distributors.

• For some categories (e.g., drill pipe, drill collars, tool joints), specific white-label clients such as NOV Grantprideco, TSC, Mitsui, and others are publicly named as clients of Jiangsu Shuguang Huayang4.

• Most companies listed (Hilong, Kerui, BOMCO, Honghua, etc.) are recognized as key OEM/white-label exporters and supply products under client brands worldwide12348.

• For categories where direct client names are not public, the companies listed are the principal OEM suppliers to international markets.

If you need the table in a downloadable format or with additional columns (e.g., certifications, export regions), let me know.

Citations:

1. https://www.saigaogroup.com/product/drill-pipe/

2. http://hilonggroup.com/en/about/industry/p3

3. https://www.roschenmining.com/dth-drilling-tools/dth-drill-pipe/slick-drill-collars.html

4. http://en.shuguanggroup.com/product/209.html

5. https://www.pvcstabilizer.com/zinc-stabilizer/

6. https://www.made-in-china.com/products-search/hot-china-products/Drill.html

7. https://www.made-in-china.com/products-search/hot-china-products/White_Label_Products.html

8. https://www.gnsolidscontrol.com/drilling/top-10-china-largest-oil-drilling-rig-manufacturer-companies-list/

9. https://www.made-in-china.com/products-search/hot-china-products/Drill_Pipe_Manufacturers.html

10. https://www.made-in-china.com/manufacturers/label-casing.html

11. http://www.xrdpetroleum.com/product-tag/drill+pipe

12. https://aps-tech.com

13. https://www.centerwaypipe.com/products/drill-pipe.html

14. https://www.vigordrilling.com/downhole-drilling-tools/hwdp-heavy-weight-drill-pipe.html

15. https://www.vigordrilling.com/downhole-drilling-tools/drill-collar.html

16. https://www.made-in-china.com/manufacturers/best-tool-joint.html

17. https://www.diversitech-global.com/post/top-5-private-label-tool-suppliers-and-manufacturers

18. https://changshengmaterial.com/pvc-stabilizer/

19. https://www.diversitech-global.com/power-tool-accessories/mixed-drill-&-bits

20. https://bullimporter.com/en/manufacturing-oem-white-label-products-in-asia/