China Valve nitsumɔhe lɛ hiɛyaa he yinɔsane (3)

Valve nitsumɔhe lɛ hiɛyaa ni yaa nɔ (1967-1978)

01 Nitsumɔhei ni yaa hiɛ lɛ enaa hewalɛ

Kɛjɛ afi 1967 kɛyashi afi 1978 lɛ, yɛ tsakemɔi wuji ni ba yɛ shihilɛ mli lɛ hewɔ lɛ, valve nitsumɔ lɛ hu etee hiɛ waa. Nɔ titri ni jieɔ ehe kpo ji:

1. Valve lɛ nɔ ni ajieɔ lɛ kpo lɛ baa shi waa, ni nɔ ni hi jogbaŋŋ lɛ hu baa shi kwraa

2. Valve lɛ jeŋ nilee mli niiamlitaomɔ gbɛjianɔtoo ni ebɔi shweremɔ lɛ ená he sɛɛ

3. Nibii ni akɛwoɔ valve mli lɛ bafeɔ be kukuoo mli nibii ekoŋŋ

4. Valves ni yɔɔ ŋwɛi kɛ ŋwɛi ŋwɛi ni atooo he gbɛjianɔ lɛ bɔi baa

02 Feemɔ gbɛjianɔi ni baaha “valve line kuku” lɛ aya hiɛ .

Nibii ni yɔɔ mli lɛ ahilɛ-kɛhamɔvalve lɛnitsumɔhe lɛ eba shi waa, ni beni afee be kukuoo mli nibii ni haa mɔ tsui nyɔɔ emli ni haa mɔ tsui nyɔɔ emli kɛ nɔ ni yɔɔ teŋgbɛ lɛ sɛɛ lɛ, maŋ lɛ kɛ enɛ he hiaa waa. Klɛŋklɛŋ Nitsumɔhe ni Kwɛɔ Tsɔnei Anɔ lɛ Heavy and General Bureau lɛ to valve kuu ko shishi koni amɛkwɛ tsɔne ni akɛtsakeɔ valve nitsumɔhe lɛ he ŋaa gbɛ nɔ. Yɛ niiamlitaomɔ kɛ niiamlitaomɔ ni mli kwɔ sɛɛ lɛ, valve kuu lɛ kɛ “Amaniɛbɔɔ ni kɔɔ Susumɔi ni kɔɔ Nibii Afeemɔ He Gbɛjianɔtoi ni Akɛtsuɔ Valve ni Nɔ Kwɔ kɛ Teŋgbɛ lɛ He lɛ he” lɛ ha, ni akɛha Maŋ lɛ Gbɛjianɔtoo Kuu lɛ. Yɛ niiamlitaomɔ sɛɛ lɛ, akpɛ yiŋ akɛ abaawo yuan akpekpei 52 yɛ valve nitsumɔhe lɛ koni akɛfee ŋaa gbɛ nɔ tsakemɔi ni akɛtsu naagba ni ji tsɔne ni haa mɔ tsui nyɔɔ emli ni nɔ kwɔ kɛ nɔ ni yɔɔ teŋgbɛ lɛ he naagba ni naa wa lɛ he nii .valvɛi kɛ nɔ ni hi jogbaŋŋ lɛ shibaa oya bɔ ni aaanyɛ.

1. Kaifeng kpeei enyɔ

Yɛ May 1972 lɛ, Klɛŋklɛŋ Tsɔnei Ahe Nitsumɔhe lɛ fee maŋ kpee kovalvnitsumɔhe nitsumɔ he kpee ni afee yɛ Kaifeng Maŋ lɛ mli, yɛ Henan Kpokpaa lɛ nɔ lɛ. 125 kɛ najiaŋdamɔlɔi 198 ni jɛ valve nitsumɔhei 88, jeŋ nilee mli niiamlitaomɔ kɛ mfonirifeemɔ nitsumɔhei 8 ni sa, kpokpai kɛ maŋtiase mli tsɔnei ahe nitsumɔhei 13 kɛ mɛi ni kɛtsuɔ nii lɛ ateŋ mɛi komɛi ba kpee lɛ. Kpee lɛ kpɛ eyiŋ akɛ ebaaku sɛɛ ekɛ gbɛjianɔtoi enyɔ ni yɔɔ nitsumɔhe lɛ kɛ nilee gbɛjianɔtoo lɛ mli lɛ aba ekoŋŋ, ni ehala Kaifeng High Pressure Valve Factory kɛ Tieling Valve Factory akɛ kuu ni hiɛ hewalɛ ni nɔ kwɔ kɛ nɔ ni yɔɔ shishi lɛ mli hiɛnyiɛlɔi, ni Hefei General Machinery Research Institute kɛ Shenyang Valve Research Research nitsumɔhe lɛ ji nilee nitsumɔhe lɛ. Kpee lɛ hu susu saji ni kɔɔ “ŋmɛnɛŋmɛnɛ beaŋ nibii etɛ ni afee” lɛ ahe, nibii ni afee lɛ ahe nibii ni hi jogbaŋŋ, ŋaa gbɛ nɔ niiamlitaomɔ, nibii amlijaa, kɛ nitsumɔhei kɛ nilee nitsumɔi ni yaa hiɛ lɛ ahe hu ni ekase. Kɛjɛ nakai beaŋ kɛbaa nɛɛ, nitsumɔhei kɛ nilee nitsumɔi ni akpa afii enumɔ nɛ lɛ eje shishi ekoŋŋ. Gbɛjianɔtoi nɛɛ etsu gbɛfaŋnɔ ko ni he hiaa waa he nii yɛ valve feemɔ ni yaa hiɛ kɛ shihilɛ ni baa be kukuoo mli lɛ sɛɛkuu mli.

2. Je nitsumɔhe gbɛjianɔtoo nitsumɔi kɛ saji tsakemɔ shishi ekoŋŋ

Yɛ Kaifeng Kpee ni afee yɛ afi 1972 lɛ sɛɛ lɛ, nitsumɔhei akui je amɛnitsumɔi lɛ shishi ekoŋŋ. Nakai beaŋ lɛ, nitsumɔhei 72 pɛ kɛ amɛhe wo nitsumɔhe gbɛjianɔtoo lɛ mli, ni valve nitsumɔhei babaoo kɛ amɛhe wooo nitsumɔhe gbɛjianɔtoo lɛ mli lolo. Bɔni afee ni ato valve nitsumɔhei babaoo ahe gbɛjianɔ bɔ ni abaanyɛ lɛ, kpokpaa fɛɛ kpokpaa toɔ nitsumɔhe nitsumɔi ahe gbɛjianɔ bɔ ni sa. Shenyang nɔ ni nɔ kwɔ kɛ teŋgbɛ hewalɛ nitsumɔhe, Beijing valve nitsumɔhe, Shanghai valve nitsumɔhe, Wuhan valve nitsumɔhe,Tianjin Valv Nitsumɔhe lɛ, Gansu Hewalɛ ni Nɔ Kwɔ kɛ Teŋgbɛ Hewalɛ Nitsumɔhe lɛ, kɛ Zigong Hewalɛ ni Nɔ Kwɔ He Nitsumɔhe lɛ ji mɛi ni kwɛɔ Bokagbɛ, China Kooyigbɛ, China Bokagbɛ, Anaigbɛ Teŋgbɛ, Kooyi-Anaigbɛ, kɛ Anaigbɛ-Anaigbɛ Kpokpai lɛ anɔ. Yɛ nɛkɛ be nɛɛ mli lɛ, valve nitsumɔhe lɛ kɛ nilee nitsumɔi lɛ yɛ srɔtoi ni amɛwo yibii, ni nitsumɔhei ni yɔɔ nitsumɔhe lɛ sumɔɔ amɛ waa. Yɛ nitsumɔhe nitsumɔi ni yaa hiɛ lɛ hewɔ lɛ, niiashikpamɔi ni akɛtsakeɔ shii abɔ, yelikɛbuamɔ kɛ nikasemɔ ni akɛhaa lɛ hewɔ lɛ, jeee akɛ ehaa nibii ni afee lɛ hilɛ yaa hiɛ kɛkɛ, shi moŋ ehaa ekomefeemɔ kɛ naanyobɔɔ ni yɔɔ nitsumɔhei srɔtoi ateŋ lɛ hu yaa hiɛ, bɔni afee ni valve nitsumɔhe lɛ afee ekomefeemɔ muu lɛ fɛɛ, yɛ ekomefeemɔ mli, nine kɛ nine Going forward, showing a vib scene and .

3. Feemɔ “ŋmɛnɛŋmɛnɛ beaŋ tsakemɔi etɛ” ni kɔɔ valve nibii ahe lɛ

Yɛ Kaifeng kpeei enyɔ lɛ amli mumɔ lɛ kɛ Heavy kɛ General Bureau ni yɔɔ Klɛŋklɛŋ Nitsumɔhe ni Kwɛɔ Tsɔnei Anɔ lɛ susumɔi lɛ anaa lɛ, General Machinery Research Institute lɛ to valve “ŋmɛnɛŋmɛnɛ beaŋ nibii etɛ” nitsumɔ ko he gbɛjianɔ ekoŋŋ kɛ nitsumɔhei srɔtoi ni yɔɔ nitsumɔhe lɛ yelikɛbuamɔ ni mli wa. “Ŋmɛnɛŋmɛnɛ beaŋ nibii etɛ” nitsumɔ lɛ ji shishijee ŋaa nitsumɔ ko ni he hiaa waa, ni ji gbɛ ni hi jogbaŋŋ ni atsɔɔ nɔ atsakeɔ nitsumɔhei lɛ oya ni ahaa nibii ni akɛtsuɔ nii yɛ valve mli lɛ yaa hiɛ. Nitsumɔ kuu ni ji “ŋmɛnɛŋmɛnɛ beaŋ nibii etɛ” lɛ tsuɔ nii yɛ “nibii kpakpai ejwɛ” (ni akɛtsuɔ nii waaa, ni amamɔ waaa, ni asaa lɛ waaa kɛ nɔ ni hi jogbaŋŋ ni kɛ amɛhe kpãa gbee) kɛ “ekomefeemɔ ejwɛ” (nɔkwɛmɔnɔ, nitsumɔ mli nibii, tsakpaa kɛ ŋwɛi ŋtayaai fɛɛ, fãi ni sa) shishitoo mlai lɛ anaa. Nɔ titri ni yɔɔ nitsumɔ mli lɛ yɛ fãi etɛ, ekome ji ni afee srɔtoi ni akɛfee ekome lɛ mlɛo; ekroko lɛ ji ni afee ŋaa he mlai akuu ko ni atsake mli; nɔ ni ji etɛ lɛ ji ni ahala nibii ni akɛtsuɔ nii lɛ ni agbe naa.

4. Nilee mli niiamlitaomɔ eha jeŋ nilee mli niiamlitaomɔ etee hiɛ

(1) Jeŋ nilee mli niiamlitaomɔ kui ahe nitsumɔ kɛ kaa hei amaamɔ Yɛ afi 1969 naagbee gbɛ lɛ, ajie General Machinery Research Institute lɛ kɛjɛ Beijing kɛtee Hefei, ni akumɔ shishijee tsɔne ni akɛkaa nu ni hoɔ lɛ mli lɛ, ni enɛ ná jeŋ nilee mli niiamlitaomɔ nɔ hewalɛ waa. Yɛ afi 1971 lɛ, jeŋ nilee mli niiamlitaolɔi ku amɛsɛɛ amɛba kuu lɛ mli ekomekomei, ni valve niiamlitaomɔ he lɛ tee hiɛ kɛyashɛ mɛi ni fa fe 30, ni sɔɔmɔ nitsumɔ lɛ ha amɛto ŋaa he niiamlitaomɔ he gbɛjianɔ. Atswa laboratori ko ni yɔɔ mlɛo, akɛ tsɔne ko ni akɛkaa nu ni hoɔ lɛ, ni afee tsɔnei pɔtɛɛ ko ni akɛkaa nɔnyɛɛ, nibii ni akɛwoɔ mli kɛ tsɔnei krokomɛi ni akɛkaa nii lɛ, ni afee ŋaa gbɛ nɔ niiamlitaomɔ ni kɔɔ valve ni akɛtsiɔ nii anaa kɛ nibii ni akɛwoɔ mli lɛ he lɛ shishi.

(2) Nibii titrii ni anyɛ atsu Kaifeng Kpee ni afee yɛ afi 1973 lɛ fee ŋaa gbɛ nɔ niiamlitaomɔ he gbɛjianɔtoo kɛha valve nitsumɔ lɛ kɛjɛ afi 1973 kɛyashi afi 1975, ni ekɛ niiamlitaomɔ nitsumɔi titrii 39 ha. Yɛ amɛteŋ lɛ, nibii 8 ni akɛtsuɔ nii yɛ hulutsoo mli, nibii 16 ni akɛfiɔ nii ahe, nibii 6 ni akɛwoɔ mli, nibii 1 ni akɛtswaa tsɔne ni akɛtswaa la, kɛ nibii 6 ni akɛkaa kɛ nitsumɔ he kaa. Sɛɛ mli lɛ, yɛ Harbin Welding Nibii Amlipɛimɔ Nitsumɔhe lɛ, Wuhan Nibii Ahe Buu Nibii Amlipɛimɔ Nitsumɔhe lɛ, kɛ Hefei General Machinery Nibii Amlipɛimɔ Nitsumɔhe lɛ, ahala nitsulɔi krɛdɛɛi koni amɛto gbɛjianɔ ni amɛkwɛ daa nɔ, ni afee nitsumɔ kpeei enyɔ ni kɔɔ shishijee fãi ni yɔɔ ŋwɛi kɛ ŋwɛi ŋwɛi ŋwɛi ŋwɛi lɛ ahe lɛ he, ni akɛto niiashikpamɔ he kɛ yelikɛbuamɔ he. -Basic parts research plan in 1980. Kɛtsɔ nitsumɔhe muu lɛ fɛɛ mɔdɛŋbɔɔ ni akɛ ekomefeemɔ fee lɛ nɔ lɛ, aná nibii wuji yɛ ŋaa gbɛ nɔ niiamlitaomɔ nitsumɔ mli, ni enɛ eha jeŋ nilee mli niiamlitaomɔ etee hiɛ yɛ valve nitsumɔhe lɛ. Nɔ titri ni jɛɔ mli baa ji nɔ ni nyiɛ sɛɛ nɛɛ:

1) Tack yɛ nɔ ni akɛtswaa nii lɛ nɔ. Nibii amlitaomɔ ni kɔɔ ŋwɛi ŋta lɛ he lɛ yiŋtoo ji ni etsu naagba ni kɔɔ mligbɛ nu ni hoɔ lɛ he lɛ he niivalve lɛ. Yɛ nakai beaŋ lɛ, nibii ni akɛfiɔ ŋwɛi ŋta lɛ he lɛ titri ji 20Cr13 kɛ 12Cr18Ni9, ni amɛhe waaa, amɛhe waaa, naagbai ni mli wa ni kɔɔ mligbɛ nu ni hoɔ yɛ valve nibii amli lɛ he, kɛ esɛɛfimɔ shihilɛ kuku. Shenyang Valve Nibii Amli Taomɔ He lɛ, Harbin Welding Nibii Amli Taomɔ He lɛ kɛ Harbin Boiler Factory lɛ fee niiamlitaomɔ kuu ko ni feɔ nibii etɛ ni akɛfee ekome. Yɛ afii 2 ni akɛtsu nii waa sɛɛ lɛ, afee chrome-manganese ni akɛfiɔ ŋwɛi ŋta lɛ he nibii heei (20Cr12Mo8). Nibii lɛ yɛ gbɛjianɔtoo nitsumɔ kpakpa. Nibii ni hi jogbaŋŋ ni teɔ shi ewoɔ ŋmɔlɔ, nitsumɔ shihilɛ ni sɛɛ tsɛɔ, kɛ nickel kɛ chromium fioo ko bɛ mli, nibii ni akɛtsuɔ nii lɛ baanyɛ adamɔ shia nɔ, yɛ ŋaa gbɛ nɔ akwɛmɔ sɛɛ lɛ, ehe yɛ sɛɛnamɔ waa kɛha hiɛyaa.

2) Nibii amlitaomɔ ni awoɔ mli. Yiŋtoo ni yɔɔ paakiŋ niiamlitaomɔ lɛ sɛɛ ji ni atsu naagba ni kɔɔ valve mli nu ni hoɔ lɛ he nii. Nakai beaŋ lɛ, nɔ titri ni akɛwoɔ valve lɛ mli ji asbestos ni akɛ mu ewo mli kɛ rɔba asbestos, ni bɔ ni akɛfiɔ valve lɛ he lɛ ehiii kwraa, ni no ha valve lɛ mli nu hoɔ waa. Yɛ afi 1967 lɛ, General Machinery Research Institute lɛ to kuu ko ni taoɔ nu ni hoɔ kɛjɛɔ kponɔgbɛ lɛ he gbɛjianɔ koni amɛtao tsofai ahe nitsumɔhei komɛi, mu ni ajieɔ kɛjɛɔ mli kɛ tsɔnei ni akɛwoɔ la mli lɛ amli, ni no sɛɛ lɛ amɛkɛ ekãa fee niiamlitaomɔ ni kɔɔ nibii ni akɛwoɔ tsɔne mli kɛ valve stems lɛ ahe lɛ he niiamlitaomɔ.

3) Nibii ni akɛtsuɔ nii lɛ akasemɔ kɛ shishijee tsɔɔmɔi amli niiamlitaomɔ. Beni afeɔ ŋaa gbɛ nɔ niiamlitaomɔ lɛ, .valve nitsumɔhe lɛekɛ hewalɛ hu tsu nibii ni akɛtsuɔ nii lɛ ahe kaa kɛ shishijee tsɔɔmɔi ahe niiamlitaomɔ, ni enine shɛ yibii babaoo nɔ.

5. Feemɔ tɛknɔlɔji tsakemɔ nitsumɔhei

Yɛ Kaifeng Kpee ni afee yɛ afi 1973 lɛ sɛɛ lɛ, nitsumɔhe muu lɛ fɛɛ fee tsɔnei ahe nilee tsakemɔ. Naagbai titrii ni yɔɔ valve nitsumɔhe lɛ yɛ nakai beaŋ lɛ: Klɛŋklɛŋ lɛ, gbɛ ni atsɔɔ nɔ atsuɔ he nii lɛ ji nɔ ni sɛɛ efo, ni akɛ niji fee nɔ ni akɛwoɔ mli lɛ kwraa, ni akɛ tsɔne kome pɛ tsuɔ nii, ni akɛ tsɔnei ni akɛtsuɔ nii babaoo kɛ nibii ni akɛtsuɔ nii babaoo lɛ tsuɔ nii kɛtsuɔ nii yɛ fɛ̃i mli. Nɔ hewɔ ji akɛ, nitsumɔhei lɛ eko fɛɛ eko mli nibii srɔtoi kɛ nibii ni kɔɔ he lɛ feɔ ekome fe nine, ni amɛyibɔ ​​fa yɛ maŋ muu lɛ fɛɛ mli, shi yɛ nitsumɔhei lɛ eko fɛɛ eko mlijaa sɛɛ lɛ, nibii ni afeɔ lɛ ayibɔ faaa kwraa, ni enɛ saa bɔ ni afeɔ nibii lɛ ahe hewalɛ ahaa lɛ he. Yɛ naagbai ni awie he yɛ yiteŋgbɛ nɛɛ ahetoohamɔ mli lɛ, Heavy and General Bureau ni yɔɔ First Ministry of Machinery lɛ mli lɛ kɛ gbɛjianɔtoi ni nyiɛ sɛɛ nɛɛ ba: ato tsɔnei ni yɔɔ ŋwɛi kɛ tsɔnei ni yɔɔ teŋgbɛ lɛ ahe gbɛjianɔ, ato gbɛjianɔ yɛ ekomefeemɔ mli, aja nitsumɔ mli yɛ jwɛŋmɔ mli, ni agbɛ nibii babaoo ni afeɔ lɛ ashwã; kɛ tsɔnei ni etee hiɛ lɛ atsu nii, amɛto nibii afeemɔ hei, ni amɛkɛ nitsumɔhei titrii kɛ nitsumɔhei ni bɛ nɔ ko lɛ afee ekome. 4 Ato dade ni akɛwoɔ dade mli ni bɛ nɔ ko nɔ lɛ he gbɛjianɔ yɛ dade ni akɛwoɔ mli lɛ nitsumɔhe lɛ, ni ato tsɔnei 10 ni akɛfeɔ nibii ni mli ejɔ ni akɛtsuɔ nii yɛ nitsumɔhei titrii enumɔ lɛ amli; shika ni fa fe yuan akpekpei 52 ewo tsɔnei ahe nilee tsakemɔ mli.

(1) Tsakemɔ ni kɔɔ hulutsoo he ŋaalee he Yɛ hulutsoo he ŋaalee tsakemɔ lɛ mli lɛ, tsɔnei tamɔ nu glase tidal shell mold, fluidized sand, tidal mold kɛ precision casting ebafee nɔ ni ehe gbɛi waa. Nibii ni akɛwoɔ mli pɛpɛɛpɛ lɛ baanyɛ afee tsɔne ni chip-less loo chip-free po. Ehi jogbaŋŋ kɛha shinaa, gland ni akɛwoɔ nibii amli kɛ valve gbɔmɔtso kɛ bonnet ni ji valves bibii, kɛ shika gbɛfaŋ sɛɛnamɔi ni yɔɔ faŋŋ. Yɛ afi 1969 lɛ, Shanghai Lianggong Valve Nitsumɔhe lɛ kɛ tsɔne ni akɛwoɔ tsɔne mli lɛ pɛpɛɛpɛ tsu nii klɛŋklɛŋ kwraa kɛfee valve, kɛha PN16, DN50 shinaa valve gbɔmɔtso lɛ,

(2) Fɛ̃i nitsumɔ he ŋaa tsakemɔ Yɛ fɛ̃i nitsumɔ he ŋaa tsakemɔ mli lɛ, akɛ tsɔnei krɛdɛɛi kɛ nibii ni afeɔ lɛ tsuɔ nii yɛ valve nitsumɔhe lɛ. Yɛ afi 1964 mli tɔ̃ɔ lɛ, Shanghai Valve No. 7 Factory lɛ fee tsɔne ni akɛfeɔ gate valve gbɔmɔtso lɛ mli nibii ni haa mɔ he jɔɔ lɛ, ni no ji klɛŋklɛŋ tsɔne ni akɛ tsɔne ni haa tsɔne lɛ tsuɔ nii ni haa tsɔne lɛ fãa lɛ tsuɔ nii yɛ valve nitsumɔhe lɛ. No sɛɛ lɛ, Shanghai Valve No. 5 nitsumɔhe lɛ fee DN50 ~ DN100 ni yɔɔ hewalɛ fioo ni ji globe valve gbɔmɔtso kɛ bonnet yɛ 1966 mli.

6. Okɛ hewalɛ afee srɔtoi heei ni oha sɛɛtii ni eye emuu lɛ aya hiɛ

Bɔni afee ni atsu nibii ni fa babaoo ni yeɔ emuu tamɔ mu, tsofafeemɔ nitsumɔhe, srawa hewalɛ, dade kɛ mu tsofafeemɔ nitsumɔhe lɛ ahiamɔ nii ahe nii lɛ, valve nitsumɔhe lɛ kɛ hewalɛ miifee nibii heei yɛ tsɔnei ahe nilee tsakemɔ be kome too mli, ni eha valve nibii ni kɛ amɛhe kpãa gbee lɛ etee hiɛ.

03 Kpojiemɔ

Kɛ wɔsusu 1967-1978 lɛ he lɛ, bɔ ni...valv be ko ni eho lɛ, nitsumɔhei lɛ ná he sɛɛ waa. Yɛ mu, tsofai, sarawa hewalɛ, dade kɛ ŋtayaa nitsumɔhei ni yaa hiɛ oya lɛ hewɔ lɛ, valves ni mli wa kɛ nɔ ni yɔɔ teŋgbɛ lɛ ebatsɔ “nibii ni akɛtsuɔ nii yɛ be kukuoo mli” yɛ be kukuoo mli. Yɛ afi 1972 lɛ, valve nitsumɔhe gbɛjianɔtoo lɛ bɔi nitsumɔi ekoŋŋ ni etsuɔ ​​nii. Yɛ Kaifeng kpeei enyɔ lɛ sɛɛ lɛ, ekɛ hewalɛ tsu “ŋmɛnɛŋmɛnɛ beaŋ nibii etɛ” kɛ ŋaa he niiamlitaomɔ nitsumɔ, ni ekɛ ŋaa he tsakemɔ ko ni ba yɛ nitsumɔhe lɛ fɛɛ mli lɛ je shishi. Yɛ afi 1975 lɛ, valve nitsumɔhe lɛ bɔi tsakemɔ, ni nitsumɔhe lɛ nibii ni afeɔ lɛ tsake kɛtee hiɛ.

Yɛ afi 1973 lɛ, Maŋ lɛ Gbɛjianɔtoo Kuu lɛ kpɛlɛ gbɛjianɔtoi ni akɛbaatsu nii koni akɛfee nɔnyɛɛ ni nɔ kwɔ kɛ nɔnyɛɛ ni yɔɔ teŋgbɛ lɛ babaoo lɛ nɔ .valvɛi. Yɛ shika ni akɛwo mli lɛ sɛɛ lɛ, valve nitsumɔhe lɛ efee tsakemɔ ni baanyɛ aba. Kɛtsɔ tsɔnei ahe nilee tsakemɔ kɛ hiɛyaa nɔ lɛ, akɛ tsɔnei ahe nilee komɛi ni etee hiɛ lɛ etsu nii, bɔni afee ni tsɔne ni akɛtsuɔ nii yɛ fɛ̃i mli lɛ aya hiɛ yɛ nitsumɔhe muu lɛ fɛɛ mli kɛyashɛ he ko, ni bɔ ni tsɔnei ni akɛtsuɔ nii yɛ la mli lɛ tsuɔ nii ahaa lɛ hu etee hiɛ kɛyashɛ he ko. Yɛ be mli ni atswa plasma spray welding gbɛjianɔtoo lɛ he adafi lɛ sɛɛ lɛ, aha nibii ni akɛfeɔ valves ni mli wa kɛ nɔ ni yɔɔ teŋgbɛ lɛ ahe lɛ etee hiɛ babaoo, ni naagba ni ji “kuku kome kɛ enyɔ ni hoɔ” lɛ hu etee hiɛ. Kɛji akɛ agbe nitsumɔi 32 ni kɔɔ nibii ni akɛtsuɔ nii yɛ maŋ lɛ mli lɛ ahe lɛ naa ni etsu nii lɛ, China valve nitsumɔhe lɛ yɛ shishitoo ni mli wa kɛ nibii babaoo ni ebaanyɛ efee. Kɛjɛ afi 1970 kɛbaa nɛɛ, nɔ ni jɛɔ valves ni mli wa kɛ nɔ ni yɔɔ teŋgbɛ lɛ amli baa lɛ etee nɔ etee hiɛ. Kɛjɛ afi 1972 kɛyashi afi 1975 lɛ, nibii ni ajieɔ lɛ tee hiɛ kɛjɛ 21,284t kɛtee 38,500t, ni 17,216t tee hiɛ yɛ afii 4 mli, ni ekɛ afi mli nibii ni ajieɔ yɛ afi 1970 lɛ yeɔ egbɔ. Yɛ nɛkɛ be nɛɛ mli lɛ, .valve lɛ nitsumɔhei lɛ kɛ hewalɛ fee nibii heei, jeee valvɛi srɔtoi ni akɛtsuɔ nii yɛ gbɛ fɛɛ gbɛ nɔ lɛ pɛ afee babaoo, shi moŋ valvɛi krɛdɛɛi ni akɛtsuɔ nii kɛhaa tsɔnei ni akɛwoɔ la mli, paipii, ultra-high pressure, hulutsoo ni baa shi kɛ nuklea nitsumɔhei, kɔɔyɔŋ lɛlɛ he nibii kɛ valvɛi krokomɛi ni akɛtsuɔ nii krɛdɛɛ lɛ hu efee babaoo. Kɛji akɛ 1960 afii lɛ ji be ni afee tsɔnei ni akɛtsuɔ nii yɛ gbɛ fɛɛ gbɛ nɔ lɛ babaoo lɛ, belɛ 1970 afii lɛ ji be ni afee tsɔnei ni akɛtsuɔ nii yɛ gbɛ krɛdɛɛ ko nɔ lɛ babaoo. Ni sɛɛfimɔ nyɛmɔ ni yɔɔ shia lɛvalvɛi etee hiɛ waa, ni nɔ titri ni haa maŋ lɛ shika helɛtemɔ mli nitsumɔi srɔtoi lɛ ahiɛyaa he hiamɔ nii tsuɔ nii.