Airtight surface	PN,MPa(bar)Nominal pressure
	0.25 (2.5)	0.6 (6)	1.0 (10)	1.6 (16)	2.5 (25)	4.0 (40)	6.3 (63)	10.0 (100)	16.0 (160)	25.0 (250)
Convex	DN10-2000		DN10-1200		DN10-600		DN10-400		DN10-300
Convex and concave	-		DN10-600				DN10-400		DN10-300
Slot cross-section	-		DN10-600				DN10-400		DN10-300
Entire plane	DN10-60		DN10-1200		-
Ring join surface							DN15-400		DN15-300

Series product of neck flat welded steel pipe flange

Airtight Style	Nomnal pressure
	0.6 (6)	1.0 (10)	1.6 (16)	2.5 (25)	4.0 (40)
Convex	DN10-300	DN10-600
Convex and concave	-	DN10-600
Standard surface	-	DN10-600
Entire plane	DN10-300	DN10-600

Seres product of convex flat welded ring slip-on plate steel

Nominal pressure	PN0.6MPa-1.6MPa
Nominal size	DN10-600

Series product of plate flat welded steel flanges

Airtight Surface	Nominal pressure
	0.25 (2.5)	0.6 (6)	1.0 (10)	1.6 (16)	2.5 (25)
Convex	DN10-2000		DN10-600
Entire plane	DN10-600

Lapped pipe end

Nominal Size	DN15-DN1800
Wall Thickness	2.0-120mm
Annotate:

 

Standers of Products:
ISO3419 ISO5251 ASME B16.9 ASME B16.5 ASME B16.28 ASME B16.11 MSS SP-43 MSS SP-75 MSS SP-79 MSS SP-83 MSS SP-95 MSS SP-97 JPF SP001 DIN2605 DIN2615 DIN2616 DIN2617 DIN2512～2873 JIS B2311 JIS B2312 JIS B2313 JIS B2316 GB12459 GB/T13401 GB/T14383 GB/T10752-2005 GB2506 GB10746 GB9112～9131 GB/T14626 SH3065 SH3406 SH3408 SH3409 SH3410 HG/T21631 HG/T21632 HG/T21634 HG/T21635 HG20592～20635 GD87-1101 DL/T515 DL/T695 SY5257 SY/T0510
We can produce according to our customers’specific requirements.
Material:
DIN: St45.8 st37
ASTM: A234 A403 A420 A105 A106 A182 304 304L 316 316L GB:10# 20# 20G 20g 20R Q235 16Mn 16MnR 1Cr5Mo 12CrMo 12CrMoG 12Cr1MoV 12Cr1MoG 12Cr1Mog 12Cr2Mo 12Cr2MoG 15CrMo 15CrMoG 15CrMog 15CrMoR 00Cr17Ni14Mo2 00Cr19Ni10 0Cr17Ni12Mo2 0Cr18Ni9 0Cr18Ni10Ti 0Cr18Ni12Mo2Ti 1Cr18Ni9 0Cr25Ni20
We can manufacture the products according to customers’materials,such as Cu AL Ti and alloy materials.